Barack Obama leads John McCain 48 percent to 42 percent with 6 percent undecided and 3 percent saying they won’t vote, according to a New York Times/CBS News poll conducted. May30-June 3. The margin of error is 4 percent. The poll says that if Hillary Clinton were to be the nominee she’d run better than Obama, leading McCain 50 percent to 41 percent with 6 percent undecided. That squares with a USA Today/Gallup poll released earlier this week.

Democratic primary voters say Obama should pickup Clinton as running-mate by a 59 percent to 32 percent margin, a higher figure than a similar Rasmussen Reports survey released earlier today. But you can see some of the still-lingering aftereffects of the long and bitter primary campaign in the fact that Obama supporters want Clinton on the ticket by a bare 46 percent to 44 percent margin compared to the 76 percent to 21 percent margin by which Clinton backers want her on the ticket. Democratic primary voters believe the nomination fight has hurt Democratic chances of victory in November by a 54 percent to 38 percent margin.

Sixty-three percent of Clinton supporters say they’ll turn out for Obama against McCain, 22 percent say they’ll defect to the Republican, 7 percent are undecided and 8 percent won’t vote.