One Senate seat is up for election in Montana, held by a Democratic incumbent. Voters will also choose a representative for one at-large House seat, currently held by a Republican. See Montana’s primary results.
Sen. Jon Tester (D), a key target of Republicans, represents a state that went for President Trump by more than 20 percentage points. Tester’s strong brand back home and fundraising could give him an edge over State Auditor Matt Rosendale (R), who has tried to link himself closely to Trump. In addition to multiple visits by the president, Vice President Mike Pence and Donald Trump Jr. have gone to Montana to campaign for Rosendale.
How the vote has swung from 2016, so far
Margin in the 2018 Senate race for counties that went for Clinton or Trump in the 2016 general election, and the number of precincts reporting in those counties overall.
For counties with at least 10% of precincts reporting, this is how far the vote in the Senate race has shifted towards Democrats or Republicans, compared to 2016.