President Obama will campaign with Rep. Joe Sestak (D-Pa.) later this month, the candidate the White House publicly opposed during the Democratic primary earlier this year.

Sestak, who's locked in a tough Senate race with former Rep. Pat Toomey (R-Pa.), will appear with the president in Philadelphia on Sept. 20. 

ADVERTISEMENT
"We're honored that the president would do an event with Joe during his trip to Pennsylvania," Sestak spokesman Jonathon Dworkin told the website Politics PA in an e-mail. "He and Joe may have had their differences, but they can agree that it is critical to elect a senator who will put Pennsylvania's working families first." 

The White House backed Sen. Arlen Specter (D-Pa.) in the Democratic primary. Obama campaigned and raised money for Specter in his race against Sestak. 

Earlier this summer, Sestak hedged on whether he wanted a campaign visit from Obama ahead of November, telling reporters that he would welcome campaign help from first lady Michelle ObamaMichelle LeVaughn Robinson ObamaMichelle Obama criticizes lack of diversity in politics: one side is 'all white, all men' Obama interrupts Michelle's appearance with 25th anniversary tribute Michelle Obama: Young people feel what's happening now 'not what they were taught' MORE.  

—This post was updated at 10:12 a.m.