2 candidates are tracked for North Dakota Senate District 11 on the November 3, 2026 ballot: Tim Mathern and Christine O'Riley. Candidate information follows official Cass County election filings; verify with the official election office linked below.
Tim Mathern (Democratic-NPL), Christine O'Riley (R) are on the November 3, 2026 ballot for North Dakota Senate District 11. Tim Mathern is the sitting member, per the Legislative Assembly's members-by-district roster. Party nominees were chosen at the June 9, 2026 primary, per the North Dakota Secretary of State's 2026 general-election candidate list.
State legislator. State legislators write and vote on state laws and the state budget, which fund schools, roads, prisons, universities and health programs, and set the rules for local governments and elections. Each member represents one district and serves on committees that shape bills before a floor vote. Terms are two years in most state houses and four in most state senates.
This race. Elected by district: only voters who live in the district see this race on their ballot. The sitting officeholder, Tim Mathern, is on the ballot.
North Dakota › Cass County › North Dakota Senate District 11
Democratic-NPL Incumbent
Per the campaign site.
Mathern serves on the Senate Appropriations Committee, where he has helped oversee healthcare and infrastructure investments, per the campaign site.
R
Christine O'Riley's campaign site, read on September 27, 2026, carries no readable biography.
Who is running for North Dakota Senate District 11 in 2026?
2 candidates are tracked for North Dakota Senate District 11 on the November 3, 2026 ballot: Tim Mathern and Christine O'Riley. Candidate information follows official Cass County election filings; verify with the official election office linked below.
When is the North Dakota Senate District 11 election in North Dakota?
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for North Dakota are on the North Dakota election hub at theballotbrief.com.
How do I see my exact Cass County ballot?
Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.
Candidate roster from official Cass County and state election office filings, last verified September 25, 2026. Bios and priorities carry their attribution inline.
Cross-check with the official North Dakota election office, or see the full Cass County sample ballot and your exact ballot by address.
22 tracked races in Cass County, North Dakota. Landed here from another county's search? Look up your own ballot below.