A recent Gallup poll suggests voter turnout for the 2012 presidential election will be somewhere in the middle of the higher percentages seen in 2004 and 2008 and the lower percentages seen in 1996 and 2000. For a look back at how Americans have voted historically, explore this map.

View Voter Turnout in the Last Four Elections in a full screen map

Credit: Angelo Verzoni, BU News Service