New Jersey Gov. Chris Christie's (R) approval rating took a five-point tumble in a new poll released Wednesday.

Christie, a rising Republican star who enjoyed widespread approval during his first year in office, suffered a previous dip in his approval rating in December. But his numbers rebounded in February, according to a Quinnipiac University poll

Forty-seven percent of New Jersey voters approve of his job performance compared to 46 percent who disapprove in a new Quinnipiac survey, down from his 52-40 percent job approval on Feb. 9. 

The new poll could tamp down talk of Christie making a dark-horse run for the White House in 2012.

The outspoken governor has said many times he is not interested in running for president, but has not ruled out accepting the vice presidential nod, should it come his way. And Christie has not ruled out running for president in 2016, though he faces reelection in 2013.

President Obama's approval in traditionally Democratic New Jersey is higher than Christie's, at 51-45. New Jersey voters also prefer Obama over Christie on likability measures and 52 percent would vote for the president over the governor in a potential presidential match-up, opposed to 39 percent who would do the opposite.

Quinnipiac University surveyed 1,532 registered voters on land lines and cellphones between April 12 and 18. The poll has a margin of error of 2.5 percentage points.