Rep. Mark Critz filed in Commonwealth Court Tuesday alleging that Rep. Altmire did not file enough signatures to get on the ballot. Critz’s camp says that 941 of Altmire’s 1,651 petitions signatures are invalid. Updated with Altmire camp response.

Rep. Tim Murphy is in strong shape for the coming primary according to a polling memo released by his campaign Tuesday. The survey, conducted by Public Opinion strategies, shows the incumbent with a commanding 62 point lead.

Rick Daughtery is the Chairman of the Lehigh Dems, but he must beat competitive primary opponent Jackson Eaton before he can face Rep. Charlie Dent.

U.S. Senator Tom Coburn today threw his support behind congressional hopeful Evan Feinberg on Monday. Feinberg, who served as a staffer to Coburn in Washington, DC, is challenging Rep. Tim Murphy in the 18th district primary.

Mark Critz’s campaign announced today that he has received the endorsement of the United Transportation Union (UTU) in the 12th Congressional race. Critz is facing fellow incumbent Jason Altmire in the Democratic primary in the new district.

Two politically active pro-life organizations – National Right to Life PAC and the Pennsylvania Pro-Life Federation PAC – have endorsed Rep. Tim Murphy against a conservative primary challenger.

Mark Critz’s campaign knows he is starting out behind in his primary against fellow Congressman Jason Altmire. But a polling memo released Wednesday lays out what they say is a viable path to victory.

A Trivedi campaign memo details why they think the newly-drawn 6th district is still in play.

Here’s the full list of candidates who have filed so far, and some of the more impressive numbers of petition signatures from the various campaigns.

Three Democrats are preparing their bids against Rep. Mike Kelly in the NWPA 3rd congressional district.

Conservative primary challenger Evan Feinberg is getting noticed. Politico did a feature this week listing the top five U.S. House incumbents most vulnerable to a primary challenge, and Rep. Tim Murphy made the list.