"Montana Senate Race Roiled by Republican Infighting and Campaign Finance Battles"

Montana Republican U.S. Rep. Matt Rosendale plans to run for U.S. Senate, setting up a competitive primary battle with former Navy SEAL Tim Sheehy as they seek to unseat three-term Democrat U.S. Sen. Jon Tester. Rosendale's move has frustrated GOP officials and highlights divisions within the Republican Party, with both candidates vying for support. Tester, the only Democrat holding statewide office in Montana, faces a potentially contentious race as outside spending floods the state's airwaves.