HARRISBURG, Pa. — Pennsylvania's House Majority Leader Dave Reed will run for Congress to succeed U.S. Rep. Bill Shuster in southwestern Pennsylvania.

Reed formally announced the bid Tuesday in a campaign email, a few days after telling Republican Party officials about his plans.

Reed's announcement comes a day after Pennsylvania's Supreme Court ordered the boundaries of the state's 18 congressional districts redrawn within weeks in a gerrymandering case. That creates the possibility that Reed won't live in the 9th District if it is redrawn.

The 39-year-old Reed's been in office since 2003 and majority leader for three years. The 9th District is solidly Republican and Reed likely faces a crowded GOP primary.

Republican lawmakers say Reed told them that he'll remain in the job of majority leader.

Shuster isn't running again after holding the seat since 2001.