Montana Senator Jon Tester’s campaign merch is diverse, personable, and designed to fundraise in a close contest.

Republicans are trying to seize control of the U.S. Senate by ousting Jon Tester, the last Democrat holding statewide office ...

Montana Sen. Jon Tester has criticized Trump's support as stemming from racism as he also positions himself as a moderate ...

The Montana Supreme Court ruled that a third-party Senate candidate can remain on the November ballot, rejecting the state's ...

Sen. Jon Tester is seeking a fourth term in Big Sky Country. Some voters say his dirt-farmer image has worn thin, while the ...

Polls are showing Sen. Jon Tester falling behind, raising uncomfortable questions for Democrats about how to hold the Senate.

In the closely watched Montana Senate race, incumbent Democratic Sen. Jon Tester has accused his Republican challenger, Tim Sheehy, of wanting to radically change the U.S. health care system.

Control of the Senate increasingly appears to hinge on a single race, and it’s quickly moved in the wrong direction for Democrats: Sen. Jon Tester of Montana has fallen behind his opponent in ...

Ex-Navy SEAL Tim Sheehy is trying to defeat Democratic incumbent Jon Tester—and Chuck Schumer’s money.

One of the most robust campaign merchandise operations of the election cycle is in one of the least-populous states. Senator Jon Tester, a Democrat from Montana, is the most vulnerable senator ...

Jon Tester’s campaign has devolved into ad hominem attacks on Tim Sheehy. The latest of these unwarranted attacks came as a ...