Public Policy Polling (D) finds that Chris Christie (R) is holding on to a strong lead over incumbent Gov. Jon Corzine (D).

General Election Matchup
Christie 50 (-1 from 6/30 survey)
Corzine 36 (-5)
Undecided 14 (+5)

The survey does not include an independent candidate who has qualified for public financing, Chris Daggett. As the survey was being conducted, Corzine also announced his choice for a running mate, state Sen. Loretta Weinberg.

Asked the certainty of their choice, 75 percent of voters said they were solidly committed, while 25 percent said they could still change their mind. Adding to the uncertainty for Corzine is the fact that he's still viewed unfavorably by a majority of voters, 56 percent, while 33 percent have a favorable opinion. Christie's has a 10-point net favorability rating, 42-32 percent.

The survey of 552 likely voters was conducted July 24-27, and has a margin of error of +/- 4.2 percent. The result pulls Christie's lead in the RCP average to 12.2 points.