WASHINGTON — Former President Barack Obama will return to Philadelphia next week for a rally with Sen. Bob Casey and Gov. Wolf, two fellow Democrats running for reelection.

Obama will headline a Sept. 21 rally with the two in North Philadelphia in the afternoon, and in the evening will lead a fund raiser for Casey, a former Senate colleague and an early supporter when Obama first ran for president. On the same night, Donald Trump Jr. is headlining a Pennsylvania state Republican party fund raiser in Hershey, highlighting the state's importance in the fight for control of Congress.