Gallup found that by a 72 percent to 20 percent , voters thought Romney did a better job during the debate than Obama. Independents gave Romney a big win — he won 70-19 among unaffiliated voters. And by a 10-point margin, even Democrats said that Romney won.
The 52-point overall gap between Romney and Obama accounts for the biggest debate wallop Gallup has ever found, managing editor Jeffrey M. Jones wrote:
Gallup has assessed opinion on who did better in most past presidential debates; some of these polls were conducted the night of the debate with pre-recruited samples of debate watchers immediately after it concluded, and some were conducted with more general samples of Americans in the days that followed the debate. Across all of the various debate-reaction polls Gallup has conducted, Romney's 52-point win is the largest Gallup has measured. The prior largest margin was 42 points for Bill Clinton over George H.W. Bush in the 1992 town hall debate.