North Dakota State Senate District 11

Tue, Nov 3 · Represented by Tim Mathern Democratic · Member list as of Oct 28

Tim MathernDemocratic · Incumbent32 years since first win

No published poll names both candidates.Last result · 2022 general: Tim Mathern (D) 93.5

Christine O'RileyRepublican

Last election: Tim Mathern (Democratic) was unopposed, 2022
On the 2026 ballot: 2 candidates

All State Senate districts

Side by side

Left column: MathernRight column: O'Riley

Donor-based spectrum: LiberalCentristConservativeMathernNo published score for O'Riley
Races: Won 8 of 9; None listed
Years since first win: 32; Not available

How these are counted

The spectrum is a published research score, not our rating. How this works. Wins and losses count the races in our results files, the same as each profile.

More about this race

Candidates on the ballot

Tim MathernIncumbentDemocratic
Christine O'RileyRepublican

Source: vip.sos.nd.gov, dated Oct 28

Vote in North Dakota

Trouble voting? Election Protection hotline: 866-OUR-VOTE. A nonpartisan coalition of civil-rights and voting-rights groups, not a government service. 866ourvote.org

Official results for North Dakota

History (15 elections for this seat)

Votes for listed candidates: 3,879
Election day: November 8, 2022
District map: Older district map (2022)

North Dakota Senate District 11, 1970 to 2022, 2022, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	3,62793.5%	93.5%
Scattered write-ins	Write-in	2526.5%	6.5%

Votes for listed candidates: 6,635
Election day: November 6, 2018
District map: Older district map (2012 to 2021)

North Dakota Senate District 11, 1970 to 2022, 2018, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	4,13062.3%	62.3%
RepublicanTodd McMichael	Republican	2,50537.8%	37.8%

North Dakota Senate District 11, 1970 to 2022, 2014, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	3,768100.0%	100.0%

Votes for listed candidates: 3,616
Election day: November 2, 2010
District map: Older district map (2002 to 2011)

North Dakota Senate District 11, 1970 to 2022, 2010, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	3,44995.4%	95.4%
Scattered write-ins	Write-in	1674.6%	4.6%

Votes for listed candidates: 4,042
Election day: November 7, 2006
District map: Older district map (2002 to 2011)

North Dakota Senate District 11, 1970 to 2022, 2006, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	2,74667.9%	67.9%
RepublicanDaniel Narloch	Republican	1,29632.1%	32.1%

Votes for listed candidates: 4,643
Election day: November 5, 2002
District map: Older district map (2002 to 2011)

North Dakota Senate District 11, 1970 to 2022, 2002, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	2,94263.4%	63.4%
IndependentRon Lawler	Independent	1,70136.6%	36.6%

Votes for listed candidates: 3,681
Election day: November 3, 1998
District map: Older district map (1992 to 2001)

North Dakota Senate District 11, 1970 to 2022, 1998, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	2,03355.2%	55.2%
RepublicanJohn M. Noah	Republican	1,64844.8%	44.8%

Votes for listed candidates: 4,156
Election day: November 8, 1994
District map: Older district map (1992 to 2001)

North Dakota Senate District 11, 1970 to 2022, 1994, every candidate
Candidate	Party	Votes and share	Share
DemocraticTim MathernWon(incumbent)	Democratic	2,18352.5%	52.5%
RepublicanDonald J. Kilander	Republican	1,97347.5%	47.5%

Votes for listed candidates: 4,195
Election day: November 6, 1990
District map: Older district map (1982 to 1991)

North Dakota Senate District 11, 1970 to 2022, 1990, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. K. VosperWon(incumbent)	Republican	2,14151.0%	51.0%
DemocraticPaul Sigurdson	Democratic	2,05449.0%	49.0%

Votes for listed candidates: 4,173
Election day: November 4, 1986
District map: Older district map (1982 to 1991)

North Dakota Senate District 11, 1970 to 2022, 1986, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. VosperWon(incumbent)	Republican	4,17099.9%	99.9%
OtherMelvin Olson	Other	20.1%	0.1%
OtherJames Duncan	Other	10.0%	0.0%

Votes for listed candidates: 4,627
Election day: November 2, 1982
District map: Older district map (1982 to 1991)

North Dakota Senate District 11, 1970 to 2022, 1982, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. VosperWon(incumbent)	Republican	3,06366.2%	66.2%
DemocraticLeon F. Dubourt	Democratic	1,56433.8%	33.8%

Votes for listed candidates: 4,906
Election day: November 7, 1978
District map: Older district map (1976 to 1981)

North Dakota Senate District 11, 1970 to 2022, 1978, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. VosperWon(incumbent)	Republican	3,17664.7%	64.7%
DemocraticLeon F. Dubourt	Democratic	1,73035.3%	35.3%

Votes for listed candidates: 5,722
Election day: November 2, 1976
District map: Older district map (1976 to 1981)

North Dakota Senate District 11, 1970 to 2022, 1976, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. VosperWon(incumbent)	Republican	3,12654.6%	54.6%
DemocraticMike Kennelly	Democratic	2,59645.4%	45.4%

Votes for listed candidates: 4,248
Election day: November 4, 1974
District map: Older district map (1972 to 1975)

North Dakota Senate District 11, 1970 to 2022, 1974, every candidate
Candidate	Party	Votes and share	Share
RepublicanF. K. VosperWon	Republican	2,42157.0%	57.0%
DemocraticDenis A. Martin	Democratic	1,82743.0%	43.0%

North Dakota Senate District 11, 1970 to 2022, 1970, every candidate
Candidate	Party	Votes and share	Share
RepublicanJack PageWon	Republican	1,97756.0%	56.0%
DemocraticLorne Hillier	Democratic	1,55444.0%	44.0%

1970 to 2022: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source

Only part of this chamber is up in a given cycle. Which districts vote on which date is not on file. Last contest in this district on file: 2022.

Download and cite

CC BY 4.0 State data (JSON)Share image (PNG)

Cite this page

Election Wrld. (2026). North Dakota State Senate District 11, election results 1970 to 2022. https://www.electionwrld.com/nd/senate/11. Retrieved October 30, 2026.

Embed this seat

<iframe src="https://www.electionwrld.com/embed/nd/senate/11" title="North Dakota Senate District 11" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>

Paste this into any web page. It shows the seat, its last result and the next election.

Sources

Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.

District id: ocd-division/country:us/state:nd/sldu:11

DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), DIME (ODC-BY)Data as of Oct 28, 2026