Montana elections, 2018
This page is an overview of the 2018 Montana elections, including your sample ballot, a list of the offices up for election covered by Ballotpedia, links to election results, state election dates and deadlines, and an FAQ section.
Results
U.S. Senate
General election
General election for U.S. Senate Montana
Candidate | % | Votes | ||
| ✔ |  | Jon Tester (D) | 50.3 | 253,876 |
 | Matt Rosendale (R) | 46.8 | 235,963 | |
 | Rick Breckenridge (L) | 2.9 | 14,545 | |
| Total votes: 504,384 (100.00% precincts reporting) | |||
 = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Withdrawn or disqualified candidates
- Steve Kelly (G)
U.S. House
General election
General election for U.S. House Montana At-large District
Candidate | % | Votes | ||
| ✔ |  | Greg Gianforte (R) | 50.9 | 256,661 |
 | Kathleen Williams (D) | 46.2 | 233,284 | |
 | Elinor Swanson (L) | 2.9 | 14,476 | |
| Total votes: 504,421 (100.00% precincts reporting) | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Withdrawn or disqualified candidates
- Doug Campbell (G)
State ballot measures
- See also: Montana 2018 ballot measures
Click on the following links for state ballot measure results:
- Montana I-186, Requirements for Permits and Reclamation Plans of New Hard Rock Mines Initiative (2018)
- Montana LR-128, Property Tax for State University System Measure (2018)
- Montana I-185, Extend Medicaid Expansion and Increase Tobacco Taxes Initiative (2018)
State executives
Click on the following link for state executive election results:
State legislature
Click on the following links for state legislative election results:
State courts
Click on the following link for state court election results:
Offices on the ballot
Below is a list of 2018 Montana elections covered by Ballotpedia. Follow the links to learn more about each type.
See also:
Democratic Party primaries in Montana, 2018
Republican Party primaries in Montana, 2018
| U.S. Senate | ✓ |
| U.S. House | ✓ |
| Congress special election | — |
| Governor | — |
| Other state executive | ✓ |
| State Senate | ✓ |
| State House | ✓ |
| Special state legislative | — |
| State Supreme Court | ✓ |
| Intermediate appellate courts | — |
| Local judges | ✓ |
| School boards | — |
| Municipal government | — |
| Recalls | — |
| Ballot measures | ✓ |
| Local ballot measures | — |
Legend: ✓ election(s) / — no elections
Subject to Ballotpedia's scope
Featured elections
The following Montana elections were identified as featured elections based on electoral history, competitive polling, campaign finance data, or significant involvement from noteworthy individuals or organizations. The list also includes primary elections that featured conflict between different factions within the political party.
Federal elections
Primary elections
There were no featured Congressional primary elections in Montana in 2018.
General elections
State elections
Primary elections
There were no featured state-level primary elections in Montana in 2018.
General elections
There were no featured state-level general elections in Montana in 2018.
Local elections
There were no featured local elections in Montana in 2018.
Election dates
Statewide election dates in Montana are listed below. For more dates, please see Ballotpedia:Calendar.
Statewide election dates
June 5, 2018: Primary election
November 6, 2018: General election
Polling hours: 7 a.m. to 8 p.m.[1]
Local election dates
Ballotpedia provides comprehensive ballot coverage of municipal elections in the nation's 100 largest cities by population, including races for trial court judgeships and county offices that overlap them. Ballotpedia also covers the nation's 200 largest public school districts by student enrollment and all school districts overlapping the top 100 cities by population. This list also includes state legislative special elections:
Not available. See the Ballotpedia calendar page for more election dates.
Frequently asked questions
When are the polls open?
- 7 a.m. to 8 p.m.[2]
See State Poll Opening and Closing Times (2018) for more information
Where can I find election results?
- Results for congressional elections are posted on this page on election night. Results for other elections are posted on Ballotpedia's election overview pages, as well as the relevant candidate pages. You can find links to the current election overview pages in the "Offices on the ballot" section.
How do primaries work in Montana?
- A primary election is an election in which registered voters select a candidate that they believe should be a political party's candidate for elected office to run in the general election. They are also used to choose convention delegates and party leaders. Primaries are state-level and local-level elections that take place prior to a general election. Montana utilizes an open primary system, in which registered voters do not have to be members of a party to vote in that party's primary.[3]
For information about which offices are nominated via primary election, see this article. How do I register to vote?
- Check your voter registration status here.
To register to vote in Montana, each applicant must be a citizen of the United States, a non-temporary resident of Montana for at least 30 days prior to the election, and at least 18 years old by the day of the election.[4] People serving a felony sentence in a penal institution and those who have been declared by a court to be of unsound mind are not eligible to vote.[5]
An individual can register to vote in person by completing a registration application at their county election office. They can register by mailing the application to their county election administrator or submitting it when applying for or renewing a driver’s license or state ID. Applicants may also register to vote at their county election offices, certain designated locations, or at their designated polling location on Election Day.[5][6]
Is there an early voting period?
- See also: Early voting
Montana permits early voting. Learn more by visiting this website.
Early voting allows citizens to cast their ballots in person at a polling place before an election. In states that permit no-excuse early voting, a voter does not have to provide an excuse for being unable to vote on Election Day. States that allow voters to cast no-excuse absentee/mail-in ballots in person are counted as no-excuse early voting states.
Forty-seven states and the District of Columbia permit no-excuse early voting. Alabama, Mississippi, and New Hampshire do not offer no-excuse early voting.
Who is eligible for absentee voting?
What are the voter ID laws in Montana?
How do I file to run for office?
- See Ballot access requirements for political candidates in Montana for information on how to run for state or federal office.
What does Ballotpedia cover?
- Ballotpedia's coverage extends to all elections on the federal level, all gubernatorial, state legislative, statewide ballot measure, and statewide judicial elections, as well as many other types of state executive offices. Ballotpedia also covers all elections in the U.S. territories, but not elections in other countries.
Local election coverage includes comprehensive ballot coverage for municipal and judicial elections in the top 100 cities by population and races for the large counties that overlap them. In the state capitals outside of the 100 largest cities, it includes coverage of mayoral, city council, and district attorney elections. It also includes school board elections in the top 200 largest school districts by enrollment, all California local ballot measures, and notable local ballot measures from across the nation.
Please note that Ballotpedia's election coverage does not encompass all local offices. Election information is not published in a timely manner for many local offices, which makes it infeasible to gather the necessary data given our limited resources. However, Ballotpedia's coverage scope for local elections continues to grow, and you can use Ballotpedia's sample ballot tool to see what local elections we are covering in your area.
How do I contact Ballotpedia with a question?
- Email us at editor@ballotpedia.org.
Footnotes:
- ↑ Montana Code Annotated 2015, "Time of opening and closing of polls for all elections -- exceptions," accessed September 7, 2018
- ↑ Montana Code Annotated 2015, "Time of opening and closing of polls for all elections -- exceptions," accessed September 7, 2018
- ↑ Montana Legislature, "Mont. Code Ann. § 13–10–301," accessed October 21, 2025
- ↑ Montana law says an individual does not gain residency if they relocate for "temporary work, training, or an educational program, without the intention of making that county or the state the individual's permanent home at the conclusion of the temporary work, training, or educational program." See HB 413 from 2025 for more information.
- ↑ 5.0 5.1 Montana Secretary of State, “Montana Voter Registration Application,” accessed June 10, 2025
- ↑ Montana Motor Vehicle Division, “Additional Considerations when Getting Your License or ID,” accessed June 10, 2025
