FiveThirtyEight 2012 Senate Predicted Margins vs Actual Margins
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  FiveThirtyEight 2012 Senate Predicted Margins vs Actual Margins
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Author Topic: FiveThirtyEight 2012 Senate Predicted Margins vs Actual Margins  (Read 328 times)
JRP1994
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« on: August 09, 2014, 09:12:36 PM »

http://fivethirtyeight.blogs.nytimes.com/fivethirtyeights-2012-forecast/

Because I have no life and needed something to do in order to pass the time waiting for the Hawaii polls to close tonight, I decided to test Nate Silver's 2012 Senate prediction accuracy.

Race          FiveThirtyEight prediction          Actual margin               Error
Arizona                    Flake +5.1%                       Flake +3.5%                R+1.6     
California                 Feinstein +20.8%                Feinstein +25.0%         R+4.2 
Connecticut              Murphy +7.0%                    Murphy +11.8%           R+4.8   
Delaware                 Carper +35.1%                   Carper +37.4%             R+2.3
Florida                     Nelson +8.0%                    Nelson +13.0%             R+5.0
Hawaii                     Hirono +14.7%                   Hirono +25.2%             R+10.5
Indiana                    Donnelly +2.4%                  Donnelly +5.7%           R+3.3
Maine                       King +17.3%                      King +22.2%               R+4.9
Maryland                  Cardin +24.1%                   Cardin +28.7%             R+4.6
Massachusetts           Warren +4.4%                    Warren +7.5%             R+3.1
Michigan                   Stabenow +13.6%              Stabenow +20.8%        R+7.2
Minnesota                 Klobuchar +27.4%              Klobuchar +37.4%        R+7.3
Mississippi                Wicker +33.3%                   Wicker +16.6%             R+16.7
Missouri                    McCaskill +6.2%                 McCaskill +15.5%         R+9.3
Montana                    Rehberg +1.5%                  Tester +4.0%               R+5.5
Nebraska                   Fischer +7.8%                    Fischer +15.6%            D+7.8
Nevada                      Heller +2.9%                      Heller +1.2%               R+1.7
New Jersey                Menendez +14.9%               Menendez +19.5%       R+4.6
New Mexico                Heinrich +6.8%                   Heinrich +5.7%           D+1.1
New York                   Gillibrand +37.3%                Gillibrand +45.8%       R+8.5
North Dakota              Berg +5.6%                        Heitkamp +0.9%         R+6.5
Ohio                          Brown +5.4%                      Brown +6.0%              R+0.6
Pennsylvania              Casey +7.6%                       Casey +9.1%              R+1.5
Rhode Island              Whitehouse +18.2%            Whitehouse +29.8%     R+11.6
Tennessee                  Corker +26.4%                    Corker +34.5%           D+8.1
Texas                         Cruz +15.4%                       Cruz +15.8%              D+0.4
Utah                           Hatch +35.2%                     Hatch +35.0%            R+0.2
Vermont                      Sanders +29.7%                 Sanders +46.1%         R+16.4
Virginia                        Kaine +3.4%                      Kaine +6.0%              R+2.6
Washington                  Cantwell +18.6%                Cantwell +20.9%        R+2.3
West Virginia                Manchin +12.0%                Manchin +24.1%         R+12.1
Wisconsin                     Baldwin +2.2%                  Baldwin +5.5%            R+3.3
Wyoming                      Barrasso +44.6%               Barrasso +54.3%         D+9.7
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Maxwell
mah519
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« Reply #1 on: August 09, 2014, 09:20:57 PM »

So, on average, he predicted races about 4 points more Republican than they actually were.
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