TALLAHASSEE, Fla. (AP) - A new poll shows Florida Attorney General Bill McCollum now leading millionaire businessman Rick Scott in their nasty and expensive fight for the Republican gubernatorial nomination.

The survey by Quinnipiac University released Wednesday also has U.S. Rep. Kendrick Meek leading billionaire investor Jeff Greene in their battle for the Democratic nomination for the U.S. Senate.

McCollum was favored by 44 percent to Scott's 35 percent in a random telephone poll of likely Republican voters conducted Aug. 11-16. Meek was preferred by 35 percent of likely Democratic voters, while 28 percent chose Greene.

The poll's margin of error was 3.4 percentage points in the Democratic survey and 3.5 percent points in the GOP contest.