Form N-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q


QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number         811-6624         

        Nuveen New York Select Tax-Free Income Portfolio         
(Exact name of registrant as specified in charter)

Nuveen Investments
        333 West Wacker Drive, Chicago, Illinois 60606         

(Address of principal executive offices) (Zip code)


Kevin J. McCarthy Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         

(Name and address of agent for service)

Registrant's telephone number, including area code:         312-917-7700        

Date of fiscal year end:            3/31          

Date of reporting period:         6/30/08         

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

    Portfolio of Investments (Unaudited)             
    Nuveen New York Select Tax-Free Income Portfolio (NXN)             
    June 30, 2008             
Principal        Optional Call         
Amount (000)    Description (1)    Provisions (2)    Ratings (3)    Value 

    Consumer Discretionary – 0.2%             
$             100    New York City Industrial Development Agency, New York, Liberty Revenue Bonds,    9/15 at 100.00    Baa3   $   83,510 
     IAC/InterActiveCorp, Series 2005, 5.000%, 9/01/35             

    Consumer Staples – 1.6%             
    TSASC Inc., New York, Tobacco Asset-Backed Bonds, Series 2006:             
430     4.750%, 6/01/22    6/16 at 100.00    BBB    396,537 
540     5.000%, 6/01/26    6/16 at 100.00    BBB    489,769 

970    Total Consumer Staples            886,306 

    Education and Civic Organizations – 11.5%             
100    Albany Industrial Development Agency, New York, Revenue Bonds, Albany Law School, Series    7/17 at 100.00    BBB    91,629 
     2007A, 5.000%, 7/01/31             
50    Albany Industrial Development Agency, New York, Revenue Bonds, Brighter Choice Charter    4/17 at 100.00    N/R    42,671 
     Schools, Series 2007A, 5.000%, 4/01/37             
1,700    Amherst Industrial Development Agency, New York, Revenue Bonds, UBF Faculty/Student Housing    8/12 at 101.00    AA    1,738,964 
     Corporation, University of Buffalo Creekside Project, Series 2002A, 5.000%, 8/01/22 –             
     AMBAC Insured             
30    Cattaraugus County Industrial Development Agency, New York, Revenue Bonds, St. Bonaventure    5/16 at 100.00    BBB–    28,013 
     University, Series 2006, 5.000%, 5/01/23             
430    Dormitory Authority of the State of New York, General Revenue Bonds, Manhattan College, Series    7/17 at 100.00    A    413,226 
     2007A, 5.000%, 7/01/41 – RAAI Insured             
785    Dormitory Authority of the State of New York, Insured Revenue Bonds, Iona College, Series    7/12 at 100.00    BBB    781,091 
     2002, 5.000%, 7/01/22 – XLCA Insured             
50    Dormitory Authority of the State of New York, Lease Revenue Bonds, State University Dormitory    7/15 at 100.00    AA    50,916 
     Facilities, Series 2004A, 5.000%, 7/01/29 – MBIA Insured             
215    Dormitory Authority of the State of New York, Second General Resolution Consolidated Revenue    No Opt. Call    A1    224,832 
     Bonds, City University System, Series 1990C, 7.500%, 7/01/10 – FGIC Insured             
430    Dutchess County Industrial Development Agency, New York, Civic Facility Revenue Bonds, Bard    8/17 at 100.00    A3    389,907 
     College Project, Series 2007-A2, 4.500%, 8/01/36             
100    Hempstead Town Industrial Development Agency, New York, Revenue Bonds, Adelphi University,    10/15 at 100.00    A–    99,697 
     Civic Facility Project, Series 2005, 5.000%, 10/01/35             
650    New York City Industrial Development Agency, New York, Civic Facility Revenue Bonds, Horace    No Opt. Call    AAA    544,640 
     Mann School, Series 2002, 4.290%, 7/01/41 – MBIA Insured (4)             
100    New York City Industrial Development Agency, New York, Civic Facility Revenue Bonds, St.    10/14 at 100.00    A–    96,039 
     Francis College, Series 2004, 5.000%, 10/01/34             
500    New York City Industrial Development Agency, New York, Civic Facility Revenue Bonds, YMCA of    2/11 at 100.00    A–    507,380 
     Greater New York, Series 2002, 5.250%, 8/01/21             
430    New York City Industrial Development Agency, New York, PILOT Revenue Bonds, Queens Baseball    1/17 at 100.00    AA    408,264 
     Stadium Project, Series 2006, 4.750%, 1/01/42 – AMBAC Insured             
590    New York City Industrial Development Authority, New York, PILOT Revenue Bonds, Yankee Stadium    9/16 at 100.00    BBB–    517,194 
     Project, Series 2006, 4.500%, 3/01/39 – FGIC Insured             
200    Puerto Rico Industrial, Tourist, Educational, Medical and Environmental Control Facilities Financing    2/09 at 101.00    BBB–    199,034 
     Authority, Higher Education Revenue Bonds, Ana G. Mendez University System, Series 1999,             
     5.375%, 2/01/19             
65    Seneca County Industrial Development Authority, New York, Revenue Bonds, New York Chiropractic    10/17 at 100.00    BBB    61,705 
     College, Series 2007, 5.000%, 10/01/27             

6,425    Total Education and Civic Organizations            6,195,202 

    Financials – 0.9%             
435    Liberty Development Corporation, New York, Goldman Sachs Headquarters Revenue Bonds Series    No Opt. Call    AA–    463,327 
     2007, 5.500%, 10/01/37             

    Health Care – 13.7%             
450    Dormitory Authority of the State of New York, FHA-Insured Mortgage Revenue Bonds, Montefiore    2/15 at 100.00    N/R    431,856 
     Hospital, Series 2004, 5.000%, 8/01/29 – FGIC Insured             
    Dormitory Authority of the State of New York, Revenue Bonds, Lenox Hill Hospital Obligated             
    Group, Series 2001:             
110     5.375%, 7/01/20    7/11 at 101.00    Ba2    107,324 
100     5.500%, 7/01/30    7/11 at 101.00    Ba2    92,615 
950    Dormitory Authority of the State of New York, Revenue Bonds, Memorial Sloan Kettering Cancer    7/16 at 100.00    AA    961,875 
     Center, Series 2006-1, 5.000%, 7/01/35             
670    Dormitory Authority of the State of New York, Revenue Bonds, Memorial Sloan-Kettering Cancer    7/13 at 100.00    AA    683,206 
     Center, Series 2003-1, 5.000%, 7/01/21 – MBIA Insured             
405    Dormitory Authority of the State of New York, Revenue Bonds, New York and Presbyterian    8/14 at 100.00    AAA    437,793 
     Hospital, Series 2004A, 5.250%, 8/15/15 – FSA Insured             
1,680    Dormitory Authority of the State of New York, Revenue Bonds, Winthrop South Nassau University    7/11 at 101.00    AA    1,761,278 
     Health System Obligated Group, Series 2001A, 5.250%, 7/01/17 – AMBAC Insured             
1,195    Dormitory Authority of the State of New York, Revenue Bonds, Winthrop South Nassau University    7/11 at 101.00    AA    1,252,814 
     Health System Obligated Group, Series 2001B, 5.250%, 7/01/17 – AMBAC Insured             
500    Dormitory Authority of the State of New York, Revenue Bonds, Winthrop-South Nassau University    7/13 at 100.00    Baa1    492,795 
     Hospital Association, Series 2003A, 5.500%, 7/01/32             
    Madison County Industrial Development Agency, New York, Civic Facility Revenue Bonds, Oneida             
    Health System, Series 2007A:             
100     5.250%, 2/01/27    No Opt. Call    BBB–    93,897 
90     5.500%, 2/01/32    No Opt. Call    BBB–    84,462 
750    New York City Health and Hospitals Corporation, New York, Health System Revenue Bonds, Series    2/13 at 100.00    AA    767,865 
     2003A, 5.250%, 2/15/21 – AMBAC Insured             
245    New York City Industrial Development Agency, New York, Civic Facility Revenue Bonds, Staten    7/12 at 101.00    B2    236,971 
     Island University Hospital, Series 2002C, 6.450%, 7/01/32             

7,245    Total Health Care            7,404,751 

    Housing/Multifamily – 2.9%             
1,000    New Hartford-Sunset Woods Funding Corporation, New York, FHA-Insured Mortgage Revenue Bonds,    8/12 at 101.00    AAA    1,037,840 
     Sunset Woods Apartments II Project, Series 2002, 5.350%, 2/01/20             
250    New York City Housing Development Corporation, New York, Multifamily Housing Revenue Bonds,    5/14 at 100.00    AA    252,985 
     Series 2004A, 5.250%, 11/01/30             
275    New York State Housing Finance Agency, Affordable Housing Revenue, Series 2007A, 5.250%,    11/17 at 100.00    Aa2    259,672 
     11/01/38 (Alternative Minimum Tax)             

1,525    Total Housing/Multifamily            1,550,497 

    Housing/Single Family – 8.2%             
2,000    New York State Mortgage Agency, Homeowner Mortgage Revenue Bonds, Series 101,    10/11 at 100.00    Aa1    2,004,300 
     5.000%, 10/01/18 (Alternative Minimum Tax)             
2,500    New York State Mortgage Agency, Mortgage Revenue Bonds, Thirty-First Series A, 5.300%,    4/11 at 100.00    Aaa    2,447,449 
     10/01/31 (Alternative Minimum Tax)             

4,500    Total Housing/Single Family            4,451,749 

    Long-Term Care – 12.0%             
1,980    Dormitory Authority of the State of New York, FHA-Insured Nursing Home Mortgage Revenue Bonds,    8/11 at 101.00    AA    1,994,593 
     Norwegian Christian Home and Health Center, Series 2001, 5.200%, 8/01/36 – MBIA Insured             
100    Dormitory Authority of the State of New York, Non-State Supported Debt, Ozanam Hall of Queens    11/16 at 100.00    Aa3    100,061 
     Nursing Home Revenue Bonds, Series 2006, 5.000%, 11/01/31             
50    Dormitory Authority of the State of New York, Revenue Bonds, Providence Rest, Series 2005,    7/15 at 100.00    N/R    39,222 
     5.000%, 7/01/35 – ACA Insured             
2,000    East Rochester Housing Authority, New York, FHA-Insured Mortgage Revenue Refunding Bonds,    8/12 at 101.00    AAA    2,068,159 
     Jewish Home of Rochester, Series 2002, 4.625%, 2/15/17             
1,000    East Rochester Housing Authority, New York, Revenue Bonds, GNMA/FHA-Secured Revenue Bonds, St.    12/12 at 103.00    AAA    1,042,740 
     Mary’s Residence Project, Series 2002A, 5.375%, 12/20/22             
980    New York City Industrial Development Agency, New York, GNMA Collateralized Mortgage Revenue    11/12 at 101.00    AA+    959,567 
     Bonds, Eger Harbor House Inc., Series 2002A, 4.950%, 11/20/32             
25    Suffolk County Industrial Development Agency, New York, Civic Facility Revenue Bonds, Special    7/16 at 100.00    N/R    23,687 
     Needs Facilities Pooled Program, Series 2008-B1, 5.500%, 7/01/18             
275    Yonkers Industrial Development Agency, New York, Civic Facilities Revenue Bonds, Special Needs    7/16 at 101.00    N/R    260,554 
     Facilities Pooled Program Bonds, Series 2008-C1, 5.500%, 7/01/18             

6,410    Total Long-Term Care            6,488,583 

    Materials – 0.2%             
90    Jefferson County Industrial Development Agency, New York, Solid Waste Disposal Revenue Bonds,    12/13 at 100.00    BBB    82,156 
     International Paper Company Project, Series 2003A, 5.200%, 12/01/20 (Alternative Minimum Tax)             

    Tax Obligation/General – 8.4%             
    Clarkstown, Rickland County, New York, Various Purposes Serial Bonds, Series 1992:             
505     5.600%, 6/15/10 – AMBAC Insured    No Opt. Call    AA    533,795 
525     5.600%, 6/15/11 – AMBAC Insured    No Opt. Call    AA    561,761 
525     5.600%, 6/15/12 – AMBAC Insured    No Opt. Call    AA    572,119 
15    Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Series 2006A,    2/17 at 100.00    A2    13,517 
     4.500%, 2/15/47 – MBIA Insured (UB)             
300    New York City, New York, General Obligation Bonds, Fiscal Series 2004C, 5.250%, 8/15/16    8/14 at 100.00    AA    320,430 
200    New York City, New York, General Obligation Bonds, Fiscal Series 2005J, 5.000%, 3/01/19 –    3/15 at 100.00    AA    209,212 
     FGIC Insured             
1,000    New York City, New York, General Obligation Bonds, Fiscal Series 2006J-1, 5.000%, 6/01/25    6/16 at 100.00    AA    1,024,930 
1,260    New York City, New York, General Obligation Bonds, Series D, 5.125%, 12/01/25    12/17 at 100.00    AA    1,308,107 

4,330    Total Tax Obligation/General            4,543,871 

    Tax Obligation/Limited – 16.5%             
600    Battery Park City Authority, New York, Senior Revenue Bonds, Series 2003A, 5.000%, 11/01/23    11/13 at 100.00    AAA    616,062 
500    Erie County Industrial Development Agency, New York, School Facility Revenue Bonds, Buffalo    5/14 at 100.00    AAA    546,745 
     City School District, Series 2004, 5.750%, 5/01/26 – FSA Insured             
500    Metropolitan Transportation Authority, New York, State Service Contract Refunding Bonds,    7/12 at 100.00    AA    527,960 
     Series 2002A, 5.500%, 1/01/20 – MBIA Insured             
95    Nassau County Interim Finance Authority, New York, Sales Tax Secured Revenue Bonds, Series    11/08 at 100.00    AAA    95,100 
     2001A-2, 5.125%, 11/15/21 – AMBAC Insured             
    New York City Sales Tax Asset Receivable Corporation, New York, Dedicated Revenue Bonds, Local             
    Government Assistance Corporation, Series 2004A:             
250     5.000%, 10/15/25 – MBIA Insured    10/14 at 100.00    AAA    257,595 
200     5.000%, 10/15/26 – MBIA Insured    10/14 at 100.00    AAA    205,634 
1,225     5.000%, 10/15/29 – AMBAC Insured    10/14 at 100.00    AAA    1,251,423 
600    New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal    1/17 at 100.00    AA–    604,548 
     Series 2007S-2, 5.000%, 1/15/28 – FGIC Insured             
670    New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Fiscal    2/13 at 100.00    AAA    691,165 
     Series 2003E, 5.000%, 2/01/23             
550    New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Fiscal    11/17 at 100.00    AAA    568,200 
     Series 2007C-1, 5.000%, 11/01/27             
775    New York State Environmental Facilities Corporation, State Personal Income Tax Revenue Bonds,    12/17 at 100.00    AAA    806,388 
     Series 2008A, 5.000%, 12/15/26 (UB)             
250    New York State Thruway Authority, Highway and Bridge Trust Fund Bonds, Second Generation,    4/14 at 100.00    AA    257,598 
     Series 2004, 5.000%, 4/01/21 – MBIA Insured             
145    New York State Thruway Authority, Highway and Bridge Trust Fund Bonds, Second Generation,    No Opt. Call    AA    209,667 
     Series 2005B, 16.320%, 4/01/20 – AMBAC Insured (IF)             
425    New York State Thruway Authority, Highway and Bridge Trust Fund Bonds, Series 2007,    10/17 at 100.00    AA    438,311 
     5.000%, 4/01/27             
    New York State Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed and             
    State Contingency Contract-Backed Bonds, Series 2003A-1:             
1,000     5.250%, 6/01/20 – AMBAC Insured    6/13 at 100.00    AA    1,038,540 
250     5.250%, 6/01/21 – AMBAC Insured    6/13 at 100.00    AA    258,963 
500    New York State Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed and    6/13 at 100.00    AA–    522,275 
     State Contingency Contract-Backed Bonds, Series 2003B-1C, 5.500%, 6/01/21             
30    Triborough Bridge and Tunnel Authority, New York, Convention Center Bonds, Series 1990E,    No Opt. Call    AA–    31,308 
     7.250%, 1/01/10             

8,565    Total Tax Obligation/Limited            8,927,482 

    Transportation – 2.0%             
180    Albany Parking Authority, New York, Revenue Bonds, Series 2001A, 5.625%, 7/15/25    7/11 at 101.00    BBB+    184,529 
500    Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Series 2003A,    No Opt. Call    A    527,260 
     5.000%, 11/15/15 – FGIC Insured             
100    New York State Thruway Authority, General Revenue Bonds, Series 2005G, 5.000%, 1/01/30 –    7/15 at 100.00    AAA    102,311 
     FSA Insured             
105    Port Authority of New York and New Jersey, Consolidated Revenue Bonds, One Hundred Fortieth    6/15 at 101.00    AA–    107,116 
     Series 2005, 5.000%, 12/01/31 – XLCA Insured             
160    Port Authority of New York and New Jersey, One Hundred and Forty Eighth Consolidated Revenue    8/17 at 100.00    AAA    172,032 
     Bonds, RITES Trust 1516, 11.509%, 8/15/32 – FSA Insured (IF)             

1,045    Total Transportation            1,093,248 

    U.S. Guaranteed – 5.9% (5)             
220    Albany Parking Authority, New York, Revenue Bonds, Series 2001A, 5.625%, 7/15/25    7/11 at 101.00    N/R (5)    239,050 
     (Pre-refunded 7/15/11)             
1,080    Dormitory Authority of the State of New York, Judicial Facilities Lease Revenue Bonds, Suffolk    No Opt. Call    AAA    1,254,668 
     County Issue, Series 1986, 7.375%, 7/01/16 (ETM)             
250    Dormitory Authority of the State of New York, Revenue Bonds, North Shore Long Island Jewish    5/13 at 100.00    Aaa    272,045 
     Group, Series 2003, 5.375%, 5/01/23 (Pre-refunded 5/01/13)             
340    Suffolk County Water Authority, New York, Water Revenue Bonds, Series 1986V,    No Opt. Call    AAA    369,444 
     6.750%, 6/01/12 (ETM)             
965    TSASC Inc., New York, Tobacco Asset-Backed Bonds, Series 2002-1, 5.500%, 7/15/24    7/12 at 100.00    AAA    1,029,752 
     (Pre-refunded 7/15/12)             

2,855    Total U.S. Guaranteed            3,164,959 

    Utilities – 3.3%             
    Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2006A:             
570     5.000%, 12/01/23 – FGIC Insured    6/16 at 100.00    A–    572,936 
430     5.000%, 12/01/25 – FGIC Insured    6/16 at 100.00    A–    430,262 
500    New York State Energy Research and Development Authority, Pollution Control Revenue Bonds, New    3/11 at 100.00    AA    497,945 
     York State Electric and Gas Corporation, Series 2005A, 4.100%, 3/15/15 – MBIA Insured             
250    Niagara County Industrial Development Agency, New York, Solid Waste Disposal Facility Revenue    11/11 at 101.00    Baa2    246,218 
     Bonds, American Ref-Fuel Company of Niagara LP, Series 2001A, 5.450%, 11/15/26 (Mandatory             
     put 11/15/12) (Alternative Minimum Tax)             
60    Westchester County Industrial Development Agency, Westchester County, New York, Resource    7/08 at 100.00    BBB    60,081 
     Recovery Revenue Bonds, RESCO Company, Series 1996, 5.500%, 7/01/09 (Alternative             
     Minimum Tax)             

1,810    Total Utilities            1,807,442 

    Water and Sewer – 12.3%             
2,500    New York City Municipal Water Finance Authority, New York, Water and Sewerage System Revenue    6/11 at 101.00    AA+    2,528,024 
     Bonds, Fiscal Series 2001C, 5.125%, 6/15/33             
    New York State Environmental Facilities Corporation, State Clean Water and Drinking Water             
    Revolving Funds Revenue Bonds, New York City Municipal Water Finance Authority Loan,             
    Series 2002B:             
2,000     5.250%, 6/15/19    6/12 at 100.00    AAA    2,099,239 
2,000     5.000%, 6/15/27    6/12 at 100.00    AAA    2,032,939 

6,500    Total Water and Sewer            6,660,202 

$         52,805    Total Investments (cost $53,366,453) – 99.6%            53,803,285 


    Floating Rate Obligations – (1.1)%            (590,000)

    Other Assets Less Liabilities – 1.5%            804,232 

    Net Assets – 100%           $   54,017,517 



(1)    All percentages shown in the Portfolio of Investments are based on net assets. 
(2)    Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There 
    may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be 
    subject to periodic principal paydowns. 
(3)    Ratings: Using the higher of Standard & Poor’s Group (“Standard & Poor’s”) or Moody’s Investor Service, Inc. 
    (“Moody’s”) rating. Ratings below BBB by Standard & Poor’s or Baa by Moody’s are considered to be below 
    investment grade. 
    The Portfolio of Investments may reflect the ratings on certain bonds insured by ACA, AMBAC, CIFG, FGIC, 
    MBIA, RAAI and XLCA as of June 30, 2008. Subsequent to June 30, 2008, and during the period this 
    Portfolio of Investments was prepared, there may have been reductions to the ratings of certain bonds 
    resulting from changes to the ratings of the underlying insurers both during the period and after period 
    end. Such reductions would likely reduce the effective rating of many of the bonds insured by that insurer 
    or insurers presented at period end. 
(4)    Investment valued at fair value using methods determined in good faith by, or at the discretion of, the 
    Board of Trustees. 
(5)    Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities 
    which ensure the timely payment of principal and interest. Such investments are normally considered to be 
    equivalent to AAA rated securities. 
N/R    Not rated. 
(ETM)    Escrowed to maturity. 
(IF)    Inverse floating rate investment. 
(UB)    Underlying bond of an inverse floating rate trust reflected as a financing transaction pursuant to the 
    provisions of SFAS No. 140. 

Fair Value Measurements

During the current fiscal period, the Fund adopted the provisions of Statement of Financial Accounting Standards No. 157, Fair Value Measurements (SFAS 157). SFAS 157 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosure about fair value measurements. In determining the value of the Fund’s investments various inputs are used. These inputs are summarized in the three broad levels listed below:

Level 1 – Quoted prices in active markets for identical securities. 
Level 2 – Other significant observable inputs (including quoted prices for similar securities, interest 
              rates, prepayment speeds, credit risk, etc.). 
Level 3 – Significant unobservable inputs (including management’s assumptions in determining the 
              fair value of investments). 

The inputs or methodology used for valuing securities are not an indication of the risk associated with investing in those securities.

The following is a summary of the Fund’s fair value measurements as of June 30, 2008:

    Level 1    Level 2    Level 3    Total 

Investments    $—    $53,258,645    $544,640    $53,803,285 


The following is a reconciliation of the Fund’s Level 3 investments held at the beginning and end of the measurement period:

    Level 3 
    Investments 

Balance as of March 31, 2008    $527,326 
   Gains (losses):     
       Net realized gains (losses)     
       Net change in unrealized appreciation (depreciation)    17,314 
   Net purchases at cost (sales at proceeds)     
   Net discounts (premiums)     
   Net transfers in to (out of) at end of period fair value     

Balance as of June 30, 2008    $544,640 


Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to the treatment of timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate transactions subject to SFAS No. 140. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.

At June 30, 2008, the cost of investments was $52,769,646.

Gross unrealized appreciation and gross unrealized depreciation of investments at June 30, 2008, were as follows:


Gross unrealized:     
  Appreciation    $1,089,522 
  Depreciation    (645,681)

Net unrealized appreciation (depreciation) of investments    $   443,841 



Item 2. Controls and Procedures.

  1. The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
  2. There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)         Nuveen New York Select Tax-Free Income Portfolio         

By (Signature and Title)          /s/ Kevin J. McCarthy                    
                                                  Kevin J. McCarthy
                                                  Vice President and Secretary

Date         August 29, 2008        

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)         /s/ Gifford R. Zimmerman                    
                                                 Gifford R. Zimmerman
                                                 Chief Administrative Officer (principal executive officer) 

Date         August 29, 2008        

By (Signature and Title)         /s/ Stephen D. Foy                              
                                                 Stephen D. Foy
                                                 Vice President and Controller (principal financial officer) 

Date        August 29, 2008