Republican

Zach Gibson / AP

A Republican Pennsylvania congressman has announced that he will not seek re-election, boosting Democratic hopes of winning his House seat.

U.S. Rep. Ryan Costello announced on Sunday that he would not be running, ending weeks of speculation about his future.

During an appearance on MSNBC, the second-term congressman called it "the most difficult decision" he's ever had to make and said it was due to a number of factors including the state's new congressional map.

Manuel Balce Ceneta / AP

An anti-abortion congressman asked a woman with whom he was having an extramarital affair to get an abortion when he thought she might be pregnant, a newspaper reported Tuesday.