FILE - In this April 5, 2019 file photo, former state lawmaker Kathleen Williams announces her candidacy for Montana's U.S. House seat at a rally in Billings, Mont. Williams is making a second attempt at retaking a seat held by Republicans since 1997 and faces opponent Matt Rosendale. (AP Photo/Matthew Brown, File)

FILE – In this Nov. 6, 2018, file photo, Matt Rosendale greets supporters in Helena, Montana. In the race for Montana's lone U.S. House seat, Republican Matt Rosendale faces opponent Democrat Kathleen Williams. (AP Photo/Eliza Wiley, File)