Matt Rosendale, Republicans look to oust Montana Sen. Tester

By MATT VOLZ, Associated Press

HELENA — Montana State Auditor Matt Rosendale will challenge Democratic U.S. Sen. Jon Tester in November as Republicans look to take back Tester’s seat and complete a sweep of Montana’s congressional delegation.

In Montana’s other top primary, former state legislator Kathleen Williams defeated four other candidates to win the Democratic nomination for the state’s U.S. House seat and take on Republican incumbent Greg Gianforte. Her win punctuated a big night for women running for office in the eight states that held primaries on Tuesday.

Republicans have been gain...