JACKSON, Miss. — Travis Childers, a conservative Democrat who served just over two years in Congress, says he's running for the U.S. Senate in Mississippi.
The 55-year-old Childers told The Associated Press on Friday that he's qualifying for the seat that Republican Thad Cochran first won in 1978.
Cochran faces a challenge from two-term state Sen. Chris McDaniel in the Republican primary.
In the Democratic primary, Childers will face Bill Marcy, who has twice run unsuccessfully for the U.S. House as a tea party Republican.
Primaries are June 3.
Childers won north Mississippi's 1st District U.S. House seat in a 2008 special election. He was defeated by a Republican in 2010.
The last Democrat to serve in the Senate from Mississippi was John C. Stennis, who retired in 1989.