Missouri State Senate District 18
Tue, Nov 3 · Represented by Cindy O'Laughlin Republican (not a candidate in 2026) · Member list as of Oct 28
No published poll names both candidates.Last result · 2022 general (different candidates): Cindy O'Laughlin (R) 75.8, Ayanna Shivers (D) 24.2
- Last election
- Cindy O'Laughlin (Republican) won by 51.6 points, 2022
- On the 2026 ballot
- 2 candidates
Side by side
Left column: MillerRight column: Sharpe
- Donor-based spectrum
- LiberalCentristConservativeSharpeNo published score for Miller
- Races
- None listed
- Won 4 of 4
- Years since first win
- Not available
- 8
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
Open seat
The current holder, Cindy O'Laughlin, is not on the candidate list.
- Nick MillerDemocratic
- Greg SharpeRepublican
Source: sos.mo.gov (PDF), dated Aug 25
All State Senate districts
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
Vote in Missouri
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History (14 elections for this seat)
- Votes for listed candidates
- 56,728
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Missouri Senate District 18, 1970 to 2022, 2022, every candidate Candidate Party Votes and share Share RepublicanCindy O'LaughlinWon(incumbent)Name as filed: Cindy Olaughlin Republican 42,98975.8% DemocraticAyanna Shivers Democratic 13,73924.2% - Votes for listed candidates
- 65,818
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
Missouri Senate District 18, 1970 to 2022, 2018, every candidate Candidate Party Votes and share Share RepublicanCindy O'LaughlinWonName as filed: Cindy Olaughlin Republican 46,26370.3% DemocraticCrystal Stephens Democratic 19,55529.7% - Votes for listed candidates
- 39,460
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
Missouri Senate District 18, 1970 to 2022, 2014, every candidate Candidate Party Votes and share Share RepublicanBrian MunzlingerWon(incumbent) Republican 39,460100.0% - Votes for listed candidates
- 52,345
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Missouri Senate District 18, 1970 to 2022, 2010, every candidate Candidate Party Votes and share Share RepublicanBrian MunzlingerWon Republican 30,53258.3% DemocraticWes Shoemyer(incumbent) Democratic 21,81341.7% - Votes for listed candidates
- 55,748
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Missouri Senate District 18, 1970 to 2022, 2006, every candidate Candidate Party Votes and share Share DemocraticWes ShoemyerWon Democratic 28,79551.6% RepublicanRobert J. Behnen Republican 26,95348.4% - Votes for listed candidates
- 53,743
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Missouri Senate District 18, 1970 to 2022, 2002, every candidate Candidate Party Votes and share Share RepublicanJohn W. CauthornWon Republican 29,85355.5% DemocraticSam Berkowitz Democratic 23,89044.5% - Votes for listed candidates
- 47,411
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Missouri Senate District 18, 1970 to 2022, 1998, every candidate Candidate Party Votes and share Share DemocraticJoe MaxwellWon(incumbent) Democratic 34,50372.8% RepublicanJames Lemon Republican 12,90827.2% - Votes for listed candidates
- 54,259
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
Missouri Senate District 18, 1970 to 2022, 1994, every candidate Candidate Party Votes and share Share DemocraticJoe MaxwellWon Democratic 36,97468.1% RepublicanSeth Shumaker Republican 17,28531.9% - Votes for listed candidates
- 39,750
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1991)
Missouri Senate District 18, 1970 to 2022, 1990, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon(incumbent) Democratic 26,28766.1% RepublicanKenneth D. Dishman Republican 13,46333.9% - Votes for listed candidates
- 34,742
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1991)
Missouri Senate District 18, 1970 to 2022, 1986, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon(incumbent) Democratic 34,742100.0% - Votes for listed candidates
- 36,784
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Missouri Senate District 18, 1970 to 2022, 1982, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon(incumbent) Democratic 36,784100.0% - Votes for listed candidates
- 47,637
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
Missouri Senate District 18, 1970 to 2022, 1978, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon(incumbent) Democratic 32,05867.3% RepublicanOrin F. Schwanke Jr. Republican 15,57932.7% - Votes for listed candidates
- 28,928
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
Missouri Senate District 18, 1970 to 2022, 1974, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon(incumbent) Democratic 28,928100.0% - Votes for listed candidates
- 26,561
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
Missouri Senate District 18, 1970 to 2022, 1970, every candidate Candidate Party Votes and share Share DemocraticNorman MerrellWon Democratic 26,561100.0%
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
Cite this page
Election Wrld. (2026). Missouri State Senate District 18, election results 1970 to 2022. https://www.electionwrld.com/mo/senate/18. Retrieved October 31, 2026.
Embed this seat
<iframe src="https://www.electionwrld.com/embed/mo/senate/18" title="Missouri Senate District 18" 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>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:mo/sldu:18
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), DIME (ODC-BY)Data as of Oct 28, 2026