How Does the Presidential Race Compare to Previous Ones?

One way to measure the presidential race is to compare the national Gallup poll now to national Gallup polls taken on or close to this date in previous years to see their predictive value. Talking Points Memo has collected the data, and here it is. The notation D+6 means the Democrat was ahead by 6 points, etc. Incumbents are marked with an asterisk.

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‘The Votemaster’ is the guy behind electoral-vote.com, which the Prospect has teamed up with to bring you polling analysis and predictions for the 2012 election. You can find out more about him by clicking here.