A sign for Republican Tim Sheehy's U.S. Senate campaign is seen along U.S. Interstate 90 on Nov. 1, 2024, near Whitehall, Mont. (AP Photo/Matthew Brown)

FILE - Democratic U.S. Sen. Jon Tester concedes the Montana Senate race to Republican Tim Sheehy in Great Falls, Mont., Nov. 6, 2024. (Thom Bridge/Independent Record via AP, File)

FILE - Republican Montana Senate candidate Tim Sheehy speaks during an election night watch party, Nov. 6, 2024, in Bozeman, Mont. (AP Photo/Tommy Martino, File)

A sign for Republican Tim Sheehy's U.S. Senate campaign is seen along U.S. Interstate 90 on Nov. 1, 2024, near Whitehall, Mont. (AP Photo/Matthew Brown)

FILE - Sen. Jon Tester, D-Mont., left, receives a hug from supporter Brianne Laurin during an election night watch party, Nov. 5, 2024, in Great Falls, Mont. (AP Photo/Mike Clark, File)

FILE - Supporters cheer at an election night watch party for Republican Montana Senate candidate Tim Sheehy, Nov. 6, 2024, in Bozeman, Mont. (AP Photo/Tommy Martino, File)

FILE - Republican Montana Senate candidate Tim Sheehy, right, waves to supporters with his wife, Carmen Sheehy, during an election night watch party, Nov. 6, 2024, in Bozeman, Mont. (AP Photo/Tommy Martino, File)