Nearly half of voters (49 percent) would be less likely to vote for a candidate if President Obama campaigns for them. That’s 10 points higher than the number that would be more likely to vote for that candidate (39 percent).
It’s about the same for former Republican vice presidential candidate Sarah Palin: 51 percent would be less likely to vote for a candidate she backs and 37 percent more likely.
Only former President Bill Clinton receives an overall positive response. By 45-41 percent, voters would be more likely to vote for a Clinton-backed candidate, rather than less likely.
By 16 percentage points, independents are more inclined to vote for a candidate supported by Clinton (47 percent) than Obama (31 percent). Clinton also outperforms Palin among independents by 24 points.