Representative Brian Fitzpatrick, a Republican, faces a competitive race as he tries to hold on to his seat in the increasingly blue Philadelphia suburbs.

Democrats in Pennsylvania will settle primary fights on Tuesday to shape their congressional slate for the fall election when they hope to capture the state’s four swing districts and ultimately a U.S...

In Pennsylvania’s 10th district, Janelle Stelson, a former local news anchor, defeated Justin Douglas , chair of the Dauphin county board of commissioners, in the Democratic primary.