Christie's approval rating is 56 percent among Garden State registered voters, results released Wednesday indicated.
Fifty-two percent said he deserves to be re-elected, compared to 40 percent who said he doesn't, the survey found.
Christie's approval rating is up from a 53 percent-to-42 percent showing in a Sept. 5 poll by the independent Quinnipiac University in Hamden, Conn., soon after he spoke at the Republican National Convention.
In a possible early look at the 2013 election for governor, Christie leads Newark Mayor Cory Booker, a possible Democratic challenger, 46 percent to 42 percent, Quinnipiac said.
Results are based on a survey of 1,405 registered voters in New Jersey conducted Oct. 10-14. The margin of error is 2.6 percentage points.