Newest items first; all items in reverse chronological order.



August 11, 2021: REDISTRICTING DATA RELEASE- CENSUS BUREAU TO RELEASE PL94-171 BLOCK-LEVEL DATA FOR 2020 CENSUS


April 29, 2021: APPORTIONMENT FOR 2020--D, CENSUS BUREAU RELEASES OFFICIAL APPORTIONMENT NUMBERS (Additional notes.)


April 28, 2021: APPORTIONMENT FOR 2020--C, CENSUS BUREAU RELEASES OFFICIAL APPORTIONMENT NUMBERS (Additional notes.)


April 27, 2021: APPORTIONMENT FOR 2020--B, CENSUS BUREAU RELEASES OFFICIAL APPORTIONMENT NUMBERS (Additional notes.)


April 26, 2021: APPORTIONMENT FOR 2020--A, CENSUS BUREAU RELEASES OFFICIAL APPORTIONMENT NUMBERS (Prelim, to be supplemented.)


Dec 22, 2020: APPORTIONMENT FOR 2020--A, BASED UPON 2020 ESTIMATES WITH ADJUSTMENT BACK TO APRIL 1, 2020 (Prelim, to be supplemented.)



Apr 14, 2020: CENSUS 2020, BUREAU DELAYS DELIVERY OF RESULTS FROM THE CENSUS DUE TO COVID-19 CORONAVIRUS SITUATION
  • POLIDATA Home Page.


    Apr 13, 2020: CENSUS 2020, LETTER TO THE CENSUS BUREAU Re: DIFFERENTIAL PRIVACY: DISCLOSURE AVOIDANCE PROGRAM
  • See Letter to Steven Dillingham, Director of the U.S. Bureau of the Census; April 10, 2020 here.
  • POLIDATA Home Page.


    Feb 14, 2020: APPORTIONMENT FOR 2020--B, ALTERNATIVE BASES OF POPULATION FOR APPORTIONMENT (Supplemental)
  • See state-level maps at the census portal.
  • POLIDATA Home Page.




    Dec 30, 2019: APPORTIONMENT FOR 2020--A, BASED UPON 2019 ESTIMATES WITH PROJECTIONS (Prelim, to be supplemented.)


    Dec 19, 2018: A--APPORTIONMENT FOR 2020, BASED UPON 2018 ESTIMATES WITH PROJECTIONS (Prelim, to be supplemented.)


    Mar 29, 2018: CENSUS 2020, THE CITIZENSHIP QUESTION


    Dec 20, 2017: A--APPORTIONMENT FOR 2020, BASED UPON 2017 ESTIMATES WITH PROJECTIONS (Prelim, to be supplemented.)


    Dec 21, 2016: A--APPORTIONMENT FOR 2020, BASED UPON 2016 ESTIMATES WITH PROJECTIONS


    Feb 19, 2016: ELECTION CALENDAR for 2016: PRESIDENTIAL, CONGRESSIONAL, and STATE NOMINATING EVENTS


    Dec 23, 2014. A--STATE POPULATION ESTIMATES FOR JULY 1, 2014.


    Dec 30, 2013. STATE POPULATION ESTIMATES FOR JULY 1, 2014: PROJECTIONS TO 2020


    Dec 30, 2013. STATE POPULATION ESTIMATES FOR JULY 1, 2013.


    Dec 30, 2013. CONGRESSIONAL APPORTIONMENT ESTIMATES FOR 2013

  • POLIDATA Home Page.


    Dec 30, 2013. STATE POPULATION ESTIMATES FOR JULY 1, 2013: PROJECTIONS TO 2020


    Apr 4, 2013: Elections 2012: Presidential Results by Congressional District (PRCD12)


    Jan 10, 2013: Elections 2012: Official Numbers for the Electoral College


    Jan 09, 2013: Elections 2012: Vote-based Turnout Estimates: Update 6


    Dec 20, 2012. STATE POPULATION ESTIMATES FOR JULY 1, 2012.


    Dec 20, 2012. CONGRESSIONAL APPORTIONMENT ESTIMATES FOR 2012

  • POLIDATA Home Page.


    Dec 13, 2012: Elections 2012: Preliminary Turnout Estimates: Update 5


    Nov 29, 2012: Elections 2012: Preliminary Turnout Estimates: Update 4


    Nov 17, 2012: Elections 2012: Preliminary Review of Close States


    Nov 16, 2012: Elections 2012: Preliminary Review of 'Other' candidates


    Nov 15, 2012: Elections 2012: Preliminary Turnout Estimates: Update 3


    Nov 12, 2012: Elections 2012: Preliminary Turnout Estimates: Update 2


    Nov 10, 2012: Elections 2012: Preliminary Turnout Estimates: Update 1


    Nov 09, 2012: Elections 2012: Preliminary Turnout Estimates: Election Night Comparison, 2012 to 2008


    Feb 02, 2011: Census 2010 Legislative Redistricting Data: Release of the PL94-171 Datasets Begins


    Dec 21, 2010: CONGRESSIONAL APPORTIONMENT: 2010 STATE-LEVEL NUMBERS RELEASED FROM 2010 CENSUS


    Dec 23, 2009: CONGRESSIONAL APPORTIONMENT: 2010 PROJECTIONS BASED UPON STATE ESTIMATES AS OF JULY 1, 2009


    Mar 3, 2009: CONGRESSIONAL APPORTIONMENT: 437 SEATS, OR SHOULD IT BE 436?


    Dec 22, 2008: CONGRESSIONAL APPORTIONMENT: 2010 PROJECTIONS BASED UPON STATE ESTIMATES AS OF JULY 1, 2008


    Nov 18, 2008: 2008 ELECTION RECAP: SEVERAL RACES UNDECIDED 2 WEEKS PAST ELECTION DAY


    Apr 28, 2008: INDIANA VOTER ID CASE: SUPREME COURT MENTIONS POLIDATA STUDY


    Dec 27, 2007: CONGRESSIONAL APPORTIONMENT: 2010 PROJECTIONS BASED UPON STATE ESTIMATES AS OF JULY 1, 2007


    Mar 21, 2007: PRESIDENTIAL AND CONGRESSIONAL RESULTS FOR THE 2006 ELECTIONS

  • POLIDATA Home Page.


    Dec 22, 2006: CONGRESSIONAL APPORTIONMENT: PROJECTIONS BASED UPON THE 2005 STATE ESTIMATES


    Nov 8, 2006: CONGRESSIONAL RESULTS: KERRY REPUBLICANS: AND THEN THERE WERE NONE


    Sep 7, 2006: MAJORITY WATCH, Polling in 30 Close Congressional Races for the 2006 General Election


    Sep 6, 2006: PRESIDENTIAL RESULTS BY CONGRESSIONAL DISTRICTS, Update for the 110th Congress


    Jun 26, 2006: VERMONT CAMPAIGN FINANCE CASE: Supreme Court Opinion cites Polidata Study


    May 26, 2006: PRESIDENTIAL RESULTS BY CONGRESSIONAL DISTRICT, Final Review and Color Map Supplement


    May 25, 2006: DEMOGRAPHIC GUIDE TO THE UNITED STATES; Districts of the 108th Congress, 2000 Census Edition.


    May 24, 2006: DEMOGRAPHIC DATASETS FOR CONGRESSIONAL DISTRICTS, 2000 Census Edition.


    Mar 24, 2006: SERVER PROBLEMS


    Mar 22, 2006: RED VS. BLUE


    Dec 22, 2005: APPORTIONMENT FOR 2010, BASED UPON 2005 ESTIMATES