Missouri State Senate District 18
Tue, Nov 3 · Represented by Cindy O'Laughlin Republican · Member list as of Oct 28Cindy O'Laughlin isn’t on the ballot for this seat
Last result · 2022 general (different candidates): Cindy O'Laughlin (R) 75.8, Ayanna Shivers (D) 24.2
- Earlier results
- Cindy O'Laughlin (Republican) won by 40.6 points, 2018, older linesBrian Munzlinger (Republican) was unopposed, 2014, older linesAll 14 elections
Side by side
Left column: MillerRight column: Sharpe
- Donor-based spectrum
- LiberalCentristConservativeSharpeNo published score for Miller
How these are counted
The spectrum is a published research score, not our rating. How this works.
Past results
- Votes for listed candidates
- 56,728
- Election day
- November 8, 2022
- District map
- Same as today
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%
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.
All elections (14 for this seat)
- Votes for listed candidates
- 56,728
- Election day
- November 8, 2022
- District map
- Same as today
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%
More about this race
Open seat
The current holder, Cindy O'Laughlin, is not on the candidate list.
Source: sos.mo.gov (PDF), dated Aug 25
District map
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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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.
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<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.
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), DIME (ODC-BY)Data as of Oct 28, 2026