Welcome To the K7MOA Website (Permanent Archive of the Research of Poole and Rosenthal and Colleagues)

Updated 7 January 2017

Recently Updated Data Pages

DW-NOMINATE Scores 1^st to 113^th Congresses (10 March 2015)
DW-NOMINATE Roll Call Coordinates and Issue Codes for Houses 1 to 113 (24 January 2015)
DW-NOMINATE Roll Call Coordinates and Issue Codes for Senates 1 to 113 (24 January 2015)
Party Unity Scores by Democrat and Republican Members: 1857 - 2012 (8 February 2013)
Party Unity Scores by Congress: 1879 - 2012 (8 February 2013)
Percent Voting on the Winning Side by Member -- Houses/Senates 1 - 112 (8 February 2013)
Party and Chamber Medians, 1 - 112 Congresses (DW-NOMINATE Scores) (8 February 2013)
Chamber Means and Winning Policy Means for 1^st Dimension, 1 - 112 Congresses (DW-NOMINATE Scores) (8 February 2013)
Cutting Line Angle Files for the House and Senate 1^st to 112^th Congresses (7 February 2013)
Republican and Democratic Party Splits on all roll calls cast in Congresses 35 - 112 (7 February 2013)
Rank Orderings all Houses and Senates -- 1^st to 112^th Congresses (6 February 2013)
Common Space DW-NOMINATE Scores 1^st to 112^th Congresses (6 February 2013)
DW-NOMINATE Probabilities for Legislator Choices: 1^st to 112^th Congresses (6 February 2013)
One-Congress-at-a-Time DW-NOMINATE (Nokken-Poole) data for the House and Senate 1^st to 112^th Congresses (6 February 2013)
Political Polarization Measures: 1879 - 2014 (18 January 2013)
Optimal Classification in R Program with Examples (1 January 2013)
WNOMINATE in R Program with Examples (15 December 2010)
R Package for Aldrich-McKelvey and Basic Space Scaling (20 May 2010)


Recent Papers

"The Polarization of Contemporary American Politics" (with Christopher Hare, September 2013)
"Why Hasn't Democracy Slowed Rising Inequality?" (with Adam Bonica, Nolan McCarty, and Howard Rosenthal, August 2013)
"The Structure of Utility in Spatial Models of Voting" (with Royce Carroll, Jeffrey B. Lewis, James Lo, and Howard Rosenthal, December 2012)
"Bayesian Aldrich-McKelvey Scaling" (with Dave Armstrong, Ryan Bakker, Royce Carroll, and Christopher Hare, October 2012)
"Bayesian Metric Multidimensional Scaling" (with Ryan Bakker, October 2012)
"NOMINATE and American Political History: A Primer." by Phil Everson (Swarthmore), Rick Valelly (Swarthmore), and Jim Wiseman (Agnes Smith)
"A Spatial Model for Legislative Roll Call Analysis." GSIA Working Paper 5-83-84, September 1983 (With Howard Rosenthal). (This is the 1983 original -- our first paper on NOMINATE. For historical purposes only. Please note the discussion on pages 14 and 15.)
The Unidimensional Congress, 1919-84. GSIA Working Paper 44-84-85 (With Howard Rosenthal) (This is the 1985 original -- For historical purposes only.)

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