Voters in the 12 states USA Today and Gallup consider the key swing states that could decide the 2012 presidential election are now significantly more enthusiastic about voting this fall than they were in June. Six in 10 (59%) are either "extremely" or "very" enthusiastic, up from 46%, however, Democrats' level has increased more. Thus, whereas equal percentages of Democrats and Republicans were enthusiastic in June, Democrats are now significantly more enthusiastic than Republicans, 73% vs. 64%. Read more.