It's unclear whether the high-profile result will help or hurt Schweitzer politically in the state. He did not return a request to comment on how it will affect his decision on a race, though he said in late April that he'd begin to consider a run after the vote and made it clear he was interested in the race.

"I'm the kind of guy that, when I see a broke-down pickup, I'll get out with my tools and try to fix it, and I can tell you looking at Washington, D.C., from Montana, there is no bigger broke-down pickup than the Senate in Washington, D.C.," Schweitzer said then.