Poll Tracker

Yet another major poll has John McCain vaulting back into contention after falling behind Barack Obama in the wake of the Democratic convention. McCain leads Obama 49 percent to 47 percent with 3 percent expressing no opinion among likely voters in a Washington Post/ABC News poll conducted Sept. 5-7. The margin of error is 3 points. In the sample of registered voters, Obama led 47 percent to 46 percent with 4 percent expressing no opinion. Obama had led among likely voters in a pre-Democratic convention Post/ABC poll by 4 points and among registered voters by 6 points.

Obama's favorable-to-unfavorable numbers are 58 percent to 36 percent while McCain's are 59 percent to 36 percent. Sarah Palin's favorable-to-unfavorable ratio beats Joseph Biden's. She registers 58 percent to 28 percent to Biden's 51 percent to 29 percent.

Obama is favored by voters on the issue of the economy, named as their top concern, by 5 points. On Iraq, a distant second, McCain leads by 10 points. As he has all along, McCain has double-digit leads among voters when it comes to handling international affairs an an unexpected major crisis. Obama has his biggest lead on education. But Obama's leads in some of those categories have fallen since the last poll. He had led by 11 points on the economy in August and had been tied with McCain on Iraq. And the gap between him and McCain on international affairs and handling a crisis has widened in McCain's favor.