2020 Montana elections
A general election in the state of Montana was held on Tuesday, November 3, 2020, with the primary elections being held on June 2, 2020. Voters will elect one member to United States House of Representatives and all five state constitutional offices, among other elected offices.
Federal elections
Congress
Senate
Incumbent Republican Steve Daines won re-election.House of Representatives
Incumbent Republican Greg Gianforte was elected in 2018 with 50.9% of the vote. Gianforte announced he would not seek re-election, instead successfully ran for governor. In the general election, Republican state auditor Matt Rosendale defeated former Democratic state representative Kathleen Williams.Secretary of state
Incumbent Republican Montana Secretary of State Corey Stapleton was elected in 2016 with 55.5% of the vote. Stapleton has announced he would not seek re-election, instead running for the open U.S. House seat in Montana.Republican primary
Candidates
Declared
- Bowen Greenwood, clerk for the Montana State Supreme Court
- Christi Jacobsen, chief of staff to Montana Secretary of State Corey Stapleton
- Brad Johnson, Montana Public Service Commissioner and former Montana Secretary of State
- Kurt Johnson
- Forrest Mandeville, state representative
- Scott Sales, president of the Montana State Senate
Declined
- Corey Stapleton, incumbent Montana Secretary of State
Democratic primary
Candidates
Declared
- Bryce Bennett, state senator
Attorney general
Incumbent Republican Montana Attorney General Tim Fox was re-elected in 2016 with 67.7% of the vote. Fox is term-limited and cannot run for re-election. Fox decided to run for the Governor of Montana election.Republican primary
Candidates
Nominee
- Austin Knudsen, Roosevelt County Attorney, and former speaker of the Montana House of Representatives
Eliminated in primary
- Jon Bennion, chief deputy Attorney General
Democratic primary
Candidates
Nominee
- Raph Graybill, chief legal counsel to Governor Steve Bullock
Eliminated in primary
- Kimberly Dudik, state representative
Withdrawn
- Jim Cossitt, bankruptcy attorney
Declined
- John Morrison, former Montana State Auditor
Green primary
Candidates
Disqualified
- Roy Davis
Public Service Commission
Three of five seats on the Montana Public Service Commission - Districts 2, 3 and 4 - were up for election on November 3, 2020, with party primaries scheduled for June 2.State auditor
Incumbent Republican Montana State Auditor Matt Rosendale was elected in 2016 with 53.8% of the vote. Rosendale announced he would not seek re-election, instead opting to run for the open U.S. House seat in Montana.Republican primary
Candidates
Nominee
- Troy Downing, businessman and candidate for U.S. Senate in 2018
Eliminated in primary
- Nelly Nicol, businesswoman
- Scott Tuxbury, insurance underwriting firm owner
Declined
- Matt Rosendale, incumbent Montana State Auditor
Democratic primary
Candidates
Nominee
- Shane Morigeau, state representative
Eliminated in primary
- Mike Windsor, attorney
Superintendent of Public Instruction
Incumbent Republican Montana Superintendent of Public Instruction Elsie Arntzen was elected in 2016 with 51.6% of the vote.Republican primary
Candidates
Declared
- Elsie Arntzen, incumbent Montana Superintendent of Public Instruction
Democratic primary
Candidates
Declared
- Melissa Romano, fourth grade teacher and nominee for Montana Superintendent of Public Instruction in 2016
Supreme Court
The terms of Montana Supreme Court justices for Seats 5 and 6 expire at the end of 2020. A nonpartisan primary for the two seats is scheduled for June 2, and the nonpartisan election on November 3.Ballot measures
- Montana LR-130, Limit Local Government Authority to Regulate Firearms Measure
- Montana C-46, Initiated Amendment Distribution Requirements Measure
- Montana C-47, Initiated Statute and Referendum Distribution Requirements Amendment
- Montana CI-118, Allow for a Legal Age for Marijuana Amendment
- Montana I-190, the Montana Marijuana Legalization and Tax Initiative
Polling
On Legislative Referendum 130| Poll source | Date administered | Sample size | Margin of error | Yes | No | Undecided |
| Montana State University Billings | October 19–24, 2020 | 546 | ± 4.2% | 52% | 36% | 12% |