Washington, Sep 9 : Republican presidential nominee John McCain leads Democratic rival Barack Obama 46 percent to 44 percent in the latest CBS News poll, conducted three days after the completion of the parties' nominating conventions.
The poll marks the first time that McCain, whose two-point lead is within the poll's margin of error, has led Obama in CBS News general election polling.
Obama led McCain by three points in a CBS News/New York Times survey released on August 20, just before the political conventions, and led by 8 points in CBS News polling just after the Democratic National Convention.
A CBS News survey conducted last week found the two candidates tied.
Though Obama supporters had been much more enthusiastic about their candidate than McCain supporters prior to the conventions, the enthusiasm gap has narrowed considerably.
Forty-two percent of McCain's backers now say they are enthusiastic about their candidate, up from 24 percent before the conventions. Fifty-three percent of Obama supporters say the same of their candidate, up slightly from the pre-convention survey.
Roughly 80 percent of both candidates' backers say their minds are made up.
Registered voters have responded positively to the convention address given by McCain running mate Sarah Palin, who was added to the Republican ticket just more than a week ago.
Nearly half say the have a better opinion of the Alaska governor as a result of the speech; just 16 percent say the speech gave them a worse impression of her.