Republican Roger Wicker defeated Democratic former Gov. Ronnie Musgrove to fill Trent Lott’s old U.S. Senate seat.

Republican Thad Cochran also won a sixth term in the U.S. Senate, easily defeating Democrat Erik Fleming.

Wicker spent 14 years as north Mississippi’s 1st District congressman, and Republican Gov. Haley Barbour appointed him to temporarily fill the Senate seat after Lott abruptly retired last December to become a lobbyist.

Both national parties spent millions of dollars on the Wicker-Musgrove race, and the candidates ran tough ads that picked apart each other’s records.

Wicker called Musgrove a failed governor who left the budget in shambles and allowed jobs to evaporate. Musgrove said Wicker helped enrich his own former congressional staffers who moved onto private companies that received government contracts.

Republican Gregg Harper of Pearl has won Mississippi’s 3rd District race, besting Democrat Joel Gill for the open seat.

Harper had nearly 64 percent of the vote in early returns on Tuesday. The 3rd District seat in east Mississippi had been held by Republican U.S. Rep. Chip Pickering, who decided not to seek re-election after 12 years in Congress.

“It has been a true grass-roots campaign. God has truly directed our paths,” Harper said Tuesday before his victory speech.

Also Tuesday, U.S. Reps. Bennie Thompson and Gene Taylor, both D-Miss., won re-election after easily defeating two little-known Republican candidates. Thompson is chairman of the House Homeland Security Committee.

The only House race that remained undecided was between Democrat U.S. Rep. Travis Childers and Republican Greg Davis.