Vice President Joe Biden stumped for Democratic Senate candidate Katie McGinty on Monday while accompanying Pennsylvania’s senior Democratic senator, Bob Casey, on their way to an official White House event Monday at the Community College of Philadelphia.

Biden and Casey stopped at Philadelphia’s Mayfair Diner to promote McGinty, former chief of staff to Gov. Tom Wolf, in her bid to unseat GOP Sen. Pat Toomey. McGinty faces former Rep. Joe Sestak in Tuesday’s Senate Democratic primary.