Three Pennsylvania races for the U.S. House remain uncalled by The Associated Press. That's as vote counting continued Wednesday and Republicans fight to keep their slim majority in the U.S.

Pennsylvania is home to five heavily contested races for the U.S. House. Those contests will be critical to determining control of a narrowly divided chamber where Democrats need a net pickup of four seats to take control.

Donald Trump's Republicans were projected to pick up another U.S. Senate seat on Thursday and appeared to be retaining their narrow hold on the House of Representatives, putting them on track to control both chambers of Congress next year.