Bush’s endorsement would have a potentially positive impact among Republican and Republican-leaning voters, as would Palin’s. Nearly three-in-ten (28%) say they would be more likely to vote for a candidate Bush supported, 11% would be less likely and 59% say Bush’s backing would make no difference. Nearly a quarter (23%) say they would be more likely to vote for a candidate supported by Palin, 15% say they would be less likely to vote for that candidate; 61% say a Palin endorsement would make no difference.

Yet among all voters, endorsements by Bush and Palin – as well as other prominent Republicans – would be seen more negatively than positively. Roughly a quarter (26%) of all registered voters say they would be less likely to vote for a candidate supported by Bush, 14% say they would be more likely and 58% say it would make no difference. While 28% of all voters would view a Palin endorsement negatively, only 11% would view it positively and 60% say it would not matter.