Montana's fifteenth state senate district is represented by Republican Senator Ryan Osmundson.

As of the 2010 census, a total of 19,986 civilians reside within Montana's fifteenth state senate district. Montana state senators represent an average of 19,788 residents. After the 2000 Census, each member represented 18,044 residents.

About the office

Members of the Montana State Senate serve four-year terms with term limits. Senators may serve no more than two consecutive terms. Twenty-five of the fifty state senate seats are up for election each even-numbered year. Montana legislators assume office the first Monday of January following the election. If January 1 is a Monday, legislators assume office on the first Wednesday.

Qualifications

To be eligible to serve in the Montana State Senate, a candidate must be:

• A resident of the state for at least one year next preceding the general election
• A resident of the county for six months preceding the general election if it contains one or more districts or of the district if it contains all or parts of more than one county.

Salaries

Term limits

The Montana legislature is one of 15 state legislatures with term limits. Voters enacted the Montana Term Limits Act in 1992. That initiative said that Montana senators are subject to term limits of no more than two four-year terms, or a total of eight years.

The first year that the term limits enacted in 1992 impacted the ability of incumbents to run for office was in 2000.

Vacancies

If there is a vacancy in the senate, the Board of County Commissioners that represent the vacant seat must select a replacement. The Secretary of State must notify the Board of Commissioners and the county central committee of the political party that holds the vacant seat no later than seven days after the vacancy happened. The county central committee has 45 days after receiving notice from the Secretary of State to provide a list of candidates to the Board of County Commissioners. The board must select a replacement no later than 15 days after receiving the list of candidates. If the Senate is in session, the selection must be made no later than five days after receiving a candidate list. Any person selected to fill a Senate seat serves until the next scheduled general election.

Elections

2020

Elections for the office of Montana State Senate will take place in 2020. The general election will be held on November 3, 2020. A primary is scheduled for June 2, 2020. The filing deadline is March 9, 2020.

2016

Elections for the Montana State Senate took place in 2016. The primary election was held on June 7, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was March 14, 2016. Incumbent Brad Hamlett (D) did not seek re-election because of term-limits.

Ryan Osmundson defeated Sean McConnaha in the Montana State Senate District 15 general election.

Montana State Senate, District 15 General Election, 2016

Sean McConnaha ran unopposed in the Montana State Senate District 15 Democratic primary.
Ryan Osmundson defeated Hertha Lund and Harry Klock in the Montana State Senate District 15 Republican primary.

Montana State Senate, District 15 Republican Primary, 2016

2010

Elections for the office of Montana State Senate consisted of a primary election on June 8, 2010, and a general election on November 2, 2010. The signature filing deadline for candidates wishing to run in this election was March 15, 2010. Incumbent Jim Peterson (R) defeated Dan Teigen (D) in the general election. Both candidates were unopposed in the June 8 primary elections.

Montana State Senate, District 15, General Election, 2010

Campaign contributions

From 2006 to 2016, candidates for Montana State Senate District 15 raised a total of $123,550. Candidates who raised money in contributions earned $11,232 on average. All figures come from Follow the Money.

Campaign contributions, Montana State Senate District 15