The recount underway in Pennsylvania's U.S. Senate race marks the end of a chaotic post-election period that has become the latest example of how disputed election rules can expose weak points in a core function of American democracy.

Three races for the U.S. House in Pennsylvania remained uncalled by The Associated Press on Wednesday, as vote counting continued and Republicans fought to keep their slim majority in the chamber.

Pennsylvania law generally requires voters to return their own ballot and prohibits people from returning other voters’ ballots to a drop box or county elections office on their behalf. But there are some exceptions.

Donald Trump 's town hall in the Philadelphia suburbs turned into an impromptu concert Monday after the former president was twice interrupted by medical emergencies in the room.

Vice President Kamala Harris zeroed in on former President Donald Trump 's comments suggesting the U.S. military could be used to deal with “the enemy from within” as the two presidential nominees took the fight for battleground Pennsylvania to opposite ends of the state on Monday.

Ben Wasserstein speaks with voters in York, PA after the VP Debate between Minnesota Governor Tim Walz and Ohio Senator JD Vance.

Berwood Yost, director of the Franklin & Marshall College Poll, said it is difficult to gauge whether abortion rights could tip the scales in the election, given concerns over the economy.

Republican Vice Presidential candidate JD Vance touched down at Harrisburg International Airport around noon Saturday.

With 19 electoral votes, Pennsylvania is considered a must-win state.And with about seven weeks until the election, the Trump and Harris campaigns must scramble to get as many voters on their side as possible.