New Jersey Gov. Chris Christie (R) will stump for former Philadelphia Eagle Jon Runyan (R) at an Ocean County barbecue in September.

It's the kind of move Republicans had been hoping for from the popular governor. Christie beat former Gov. Jon Corzine (D) 56 to 39 percent in 2009 in Rep. John Adler's (D) district. Runyan is vying to unseat the freshman Democrat in November.

A recent poll showed Christie with a 51 percent approval rating — higher than President Obama in Democrat-leaning New Jersey. Christie gets a 75 to 13 percent thumbs up from Republicans and a 61 to 29 percent approval/disapproval from independents, according to the recent Quinnipiac University poll.

But his approval rating could drop before the Sept. 5 event with Runyan. Christie acknowledged Wednesday that a clerical error blew the state's chance at winning $400 million in federal money for schools.