Gallup has the latest polling on the GOP field of 2012 prospectives, and Mitt Romney comes out on top with 26 percent of Republicans and GOP-leaning independents.
Here's how each poll breaks down.
Gallup, July 16--candidate "most likely to support for the 2012 Republican nomination," asked of Republicans and GOP-leaning independents:
Mitt Romney: 26%
Sarah Palin: 21%
Mike Huckabee: 19%
Newt Gingrich: 14%
Tim Pawlenty: 3%
Haley Barbour: 2%
It's important to note that these polls measure different things. Pew and PPP measure favorability, not who respondents are likely to support. (PPP also conducts its polls with an automated phone system that asks respondents to press buttons indicating "yes" or "no"; this method has been shown to be accurate in horse-race polling during electinos--i.e., who will you vote for?--but there's also a theory that accuracy diminishes as more questions are asked, since people might have less patience answering questions from a machine. So later questions, such as Romney's favorability, which was asked fifth, would yield less accurate results, according to that theory. Just something to keep in mind.)