For some reason, the poll speculates about Palin running under a 3rd party:
Just 21% of voters nationwide say Palin should run as an independent if she loses the Republican presidential nomination in 2012. Sixty-three percent (63%) say the 2008 GOP vice presidential nominee should not run as an independent. Sixteen percent (16%) are not sure.
If Romney secured the GOP nomination and Palin chose to run as an independent candidate, Obama would win the resulting three-way race with 44% of the vote. Romney is the choice of 33% of the voters under that scenario, with Palin a distant third with 16% support. Three percent (3%) like some other candidate, and four percent (4%) are undecided…
When Romney is the Republican nominee, he beats Obama among unaffiliated voters 48% to 41%. But when Palin is the GOP candidate, unaffiliated voters prefer Obama by a 47% to 41% margin…
In a three-way race, Palin hurts Romney by drawing 28% Republican support. Romney captures 52% of the GOP vote in that scenario.