A new poll has found New Jersey Governor Chris Christie maintaining a large lead over Democratic challenger Barbara Buono.

A Quinnipiac University poll out Wednesday showed 64 percent of likely voters back the Republican governor, while 30 percent support Buono. That's an even bigger lead than a Monmouth University poll showed last month.

Quinnipiac Poll director Maurice Carroll said there are not many promising signs for Buono, who trails Christie among women and independent voters, and few voters remain undecided or say they are likely to change their minds.

"There's no silver lining for State Sen. Barbara Buono in the cloudy outlook for her campaign," Carroll said. "Even a third of Democrats prefer Gov. Christopher Christie."

The election is Nov. 5.

The telephone survey of 1,249 likely New Jersey voters was conducted from Sept. 19-22. It has a margin of error of plus or minus 2.8 percentage points.