Poll: Clinton Leads Giuliani, McCain, Thompson

A national poll from Quinnipiac University today showed Hillary Clinton leading Rudy Giuliani in a theoretical head-to-head match-up by 45 to 44 percent. Al Gore, who isn't a candidate yet, leads Giuliani 45 to 43 percent, and Barack Obama ties Giuliani at 42 percent.

Other numbers from the poll:

Clinton leads John McCain 44 to 42 percent, and leads Fred Thompson 46 to 39 percent.