Casey might get another GOP challenger in Pa.

Sen. Bob Casey Jr. (D-Pa.) might have another Republican challenger in what at this point appears to be a weak field. Pennsylvania state Senate Majority Leader Dominic Pileggi (R), a prominent insider in Republican politics in the Keystone State, is seriously considering getting in the race.

"I have been approached by a number of people about the possibility of running for U.S. Senate. I'm flattered by the question, and I have deep concerns about the direction our nation is taking in many areas, including historically high levels of unemployment, the spiraling national debt and the federal government's attempt to take over healthcare," he said in a Facebook post Tuesday. "I have made no decision, but will continue to listen regarding how I can best serve our commonwealth and our country."

Pileggi could emerge as the front-runner in the primary to challenge Casey, who remains relatively popular in the swing state and will be tough to beat.

The other Republicans in the race include businessman and former House candidate Tim Burns, businessmen Steven Welch and Tom Smith and attorney Marc Scaringi. Republican strategists are not high on the current crop of candidates and have not yet made the race a target, despite Pennsylvania's swing status. But if Pileggi jumps in and can rally conservatives in the state, he could shake up the race.

This post was updated at 10:20 a.m.