A Montana Republican is running for governor against incumbent Democrat Rob Quist.
The two-term incumbent, who had been considered a contender for governor in 2016, was convicted of a felony last month on a drug charge.
Quist is running as an independent candidate against Quist’s former opponent in the race.
The Republican candidate for Montana governor has faced criticism for his opposition to the Keystone XL pipeline, which would transport crude oil from Alberta, Canada, to refineries on the U.S. Gulf Coast.
Quists campaign also has been criticized for his support for Trump, who has made anti-pipeline comments.
The candidate for governor of Montana is a former Marine.
Quist has not said whether he will participate in the presidential debates.
He has not responded to a request for comment from TIME.