Governor's race tops slate in all-mail Montana primary

FILE - In this Feb. 21, 2020, file photo, the two Democratic candidates for Montana governor, Whitney Williams, left, and Mike Cooney, debate at the Emerson Center for Arts and Culture in Bozeman, Mont. The pair will face each other in the June 2 primary. Montana voters are choosing party nominees for governor, U.S. Senate and House and a slate of other offices in a primary election that was changed to all-mail balloting to protect against the spread of the coronavirus. (Thom Bridge/Independent Record via AP, File)

FILE - In this Aug. 7, 2019, file photo, Democratic Montana Gov. Steve Bullock speaks at the National Press Club in Washington. Montana voters on Tuesday, June 2, 2020, are choosing party nominees for governor, U.S. Senate and House and a slate of other offices in a primary election that was changed to all-mail balloting to protect against the spread of the coronavirus. Republicans are seeking to end 16 consecutive years with a Democrat in the governor’s office when Bullock completes his second term. (AP Photo/Patrick Semansky, File)

FILE - In this May 10, 2018 file photo, Sen. Steve Daines, R-Mont., asks a question during a Senate Appropriations subcommittee hearing on Capitol Hill in Washington. Montana voters on Tuesday, June 2, 2020, are choosing party nominees for governor, U.S. Senate and House and a slate of other offices in a primary election that was changed to all-mail balloting to protect against the spread of the coronavirus. Gov. Steve Bullock was expected to defeat first-time candidate John Mues for the Democratic nomination to challenge incumbent Daines. (AP Photo/Jacquelyn Martin, File)