Kimber Brown

Sen. Tester's position on the war in Gaza could cost him some young voters. State school superintendent and Republican congressional candidate Elsie Arntzen has angered some members of her party. Democrats hope to pick up a few more legislative seats this year.

Montana Democratic U.S. Sen. Jon Tester is walking a fine line as he seeks a fourth term. And this year could determine control of the Senate. Tester’s appeal-to-the-middle brand of politics faces another tough test in increasingly polarized times.