Sen. Thad Cochran has shifted his support to Sen. John McCain for president.
Cochran made the announcement in a statement Thursday after his first choice, former Massachusetts governor, Mitt Romney, dropped out of the Republican race.
Mississippi's other senator, Roger Wicker, a Republican, had endorsed former Tennessee senator, Fred Thompson, who has also withdrawn from the race. Wicker has not announced his support for another candidate.
GOP Cong. Chip Pickering endorsed McCain last year. Cong. Bennie Thompson, a Democrat, has endorsed fellow Democrat, Barack Obama for president.
Congressman Gene Taylor, a Democrat, has not announced an endorsement.