HARRISBURG (AP) – Former Harrisburg Mayor Linda Thompson says she’s planning a challenge to Republican Congressman Scott Perry. Thompson, a Democrat, said that she is circulating petitions to get on the ballot in the 4th Congressional District. The deadline to submit petitions is March 11. Thompson was beaten in last year’s primary after serving one term as mayor. Perry, a former state House representative from York County, is in his first term after running to succeed the retiring Todd Platts. The district includes all of York and Adams Counties and parts of Dauphin and Cumberland Counties.