NBC News projects Tim Sheehy has won the seat held by Jon Tester, a three-term Democratic incumbent, in a state that has shifted in Republicans’ direction in recent years.

Tim Sheehy, a wealthy Republican businessman, was dogged by controversies during the campaign. But Senator Jon Tester, a Democrat, could not outrun the demographic shift in his deep-red state.

Republican Tim Sheehy will defeat three-term Montana Sen. Jon Tester, CNN projects, boosting the GOP’s hopes of claiming the Senate majority.