A new poll reveals a clear leader in the Republican presidential race: nobody.
The AP-Ipsos survey shows nearly a quarter of Republicans are unwilling to back any of the top candidates -- Rudy Giuliani, Fred Thompson, John McCain or Mitt Romney. And no one has emerged as the front-runner among evangelicals.
Giuliani's popularity continues to drop. His support is down to 21 percent, off six points from June and 14 points since March.
The former New York mayor is running virtually even with Thompson, who -- at a steady 19 percent -- has become a threat without even officially entering the race. McCain is off a bit at 15 percent, and Romney remains at eleven.
Clinton keeps her strong 36-to-20 percent lead over Obama among Democrats. She boasts a 13-point advantage among blacks and is up an even stronger 28 points among Hispanics.
The AP-Ipsos poll of more than a thousand adults was conducted by telephone last week. The margin of error is plus or minus three percent.