Ray Linsenmayer

Ray Lisenmayer for Congress / Facebook

Democrat Conor Lamb's last remaining primary opponent is now supporting him, the way for the newly sworn-in Pennsylvania congressman to win the party nomination to challenge third-term Republican Rep. Keith Rothfus in November.

Friends of Ray Linsenmayer, Don Wright/AP, Conor Lamb for Congress

A month after winning the special election in the 18th Congressional District, U.S. Rep. Conor Lamb (D - Mt. Lebanon), now faces a new drama on a new stage.

Virginia Alvino Young/Conor Lamb campaign / 90.5 WESA

Pennsylvania’s congressional hopefuls now have a little more certainty about the May 15 primary election.

The newly drawn congressional district map was upheld after being challenged in court, and the deadline has passed for major party candidates to get on the ballot.

Keith Srakocic / AP

The new congressional map issued by the Pennsylvania Supreme Court Monday shifts Democrat Conor Lamb — who lives in Mt. Lebanon and is running in the special election to fill the vacant seat in the current 18th District — into a new district and potentially a competitive primary.