Texas State Senate District 18

Tue, Nov 3 · Represented by Lois Kolkhorst Republican · Member list as of Oct 28

Erica GillumDemocratic

No published poll names both candidates.Last result · 2022 general: Lois Kolkhorst (R) 66.2, Josh Tutt (D) 33.8

Lois KolkhorstRepublican · Incumbent10 years since first win

Last election: Lois Kolkhorst (Republican) won by 32.4 points, 2022
On the 2026 ballot: 2 candidates

All State Senate districts

Side by side

Left column: GillumRight column: Kolkhorst

Donor-based spectrum: LiberalCentristConservativeKolkhorstNo published score for Gillum
Races: None listed; Won 11 of 11
Years since first win: Not available; 10

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

Erica GillumDemocratic
Lois KolkhorstIncumbentRepublican

Source: sos.state.tx.us (PDF), dated Aug 28

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Official results for Texas

History (17 elections for this seat)

Votes for listed candidates: 281,654
Election day: November 8, 2022
District map: Older district map (2022)

Texas Senate District 18, 1968 to 2022, 2022, every candidate
Candidate	Party	Votes and share	Share
RepublicanLois KolkhorstWon(incumbent)	Republican	186,36766.2%	66.2%
DemocraticJosh Tutt	Democratic	95,28733.8%	33.8%

Votes for listed candidates: 422,361
Election day: November 3, 2020
District map: Older district map (2012 to 2021)

Texas Senate District 18, 1968 to 2022, 2020, every candidate
Candidate	Party	Votes and share	Share
RepublicanLois KolkhorstWon(incumbent)	Republican	277,87265.8%	65.8%
DemocraticMichael Antalan	Democratic	144,48934.2%	34.2%

Votes for listed candidates: 267,016
Election day: November 8, 2016
District map: Older district map (2012 to 2021)

Texas Senate District 18, 1968 to 2022, 2016, every candidate
Candidate	Party	Votes and share	Share
RepublicanLois KolkhorstWon	Republican	229,05185.8%	85.8%
LibertarianKathie L. Stone	Libertarian	37,96514.2%	14.2%

Texas Senate District 18, 1968 to 2022, 2012, every candidate
Candidate	Party	Votes and share	Share
RepublicanGlenn HegarWon(incumbent)	Republican	211,230100.0%	100.0%

Votes for listed candidates: 207,432
Election day: November 2, 2010
District map: Older district map (2002 to 2011)

Texas Senate District 18, 1968 to 2022, 2010, every candidate
Candidate	Party	Votes and share	Share
RepublicanGlenn HegarWon(incumbent)	Republican	146,08770.4%	70.4%
DemocraticPatricia Olney	Democratic	61,34529.6%	29.6%

Votes for listed candidates: 140,023
Election day: November 7, 2006
District map: Older district map (2002 to 2011)

Texas Senate District 18, 1968 to 2022, 2006, every candidate
Candidate	Party	Votes and share	Share
RepublicanGlenn HegarWon	Republican	110,51278.9%	78.9%
LibertarianRoy O. Wright II	Libertarian	29,51121.1%	21.1%

Votes for listed candidates: 160,205
Election day: November 5, 2002
District map: Older district map (2002 to 2011)

Texas Senate District 18, 1968 to 2022, 2002, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon(incumbent)	Democratic	85,40153.3%	53.3%
RepublicanLester Phipps	Republican	72,29645.1%	45.1%
LibertarianHorace Henley	Libertarian	2,5081.6%	1.6%

Votes for listed candidates: 143,486
Election day: November 3, 1998
District map: Older district map (1994 to 2001)

Texas Senate District 18, 1968 to 2022, 1998, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon(incumbent)	Democratic	85,29159.4%	59.4%
RepublicanReese Turner	Republican	58,19540.6%	40.6%

Texas Senate District 18, 1968 to 2022, 1994, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon(incumbent)	Democratic	98,066100.0%	100.0%

Votes for listed candidates: 190,634
Election day: November 3, 1992
District map: Older district map (1992 to 1993)

Texas Senate District 18, 1968 to 2022, 1992, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon(incumbent)	Democratic	113,72959.7%	59.7%
RepublicanCarolyn McDaniel	Republican	76,90540.3%	40.3%

Texas Senate District 18, 1968 to 2022, 1990, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon(incumbent)	Democratic	105,973100.0%	100.0%

Votes for listed candidates: 124,494
Election day: November 4, 1986
District map: Older district map (1982 to 1991)

Texas Senate District 18, 1968 to 2022, 1986, every candidate
Candidate	Party	Votes and share	Share
DemocraticKen ArmbristerWon	Democratic	76,72361.6%	61.6%
RepublicanBill Livingston	Republican	47,77138.4%	38.4%

Votes for listed candidates: 101,211
Election day: November 2, 1982
District map: Older district map (1982 to 1991)

Texas Senate District 18, 1968 to 2022, 1982, every candidate
Candidate	Party	Votes and share	Share
DemocraticJohn WilsonWon(incumbent)	Democratic	67,56366.8%	66.8%
RepublicanJ. Everett Ware	Republican	32,29831.9%	31.9%
OtherSusan Guinn	Other	1,3501.3%	1.3%

Texas Senate District 18, 1968 to 2022, 1980, every candidate
Candidate	Party	Votes and share	Share
DemocraticJohn WilsonWon	Democratic	81,53865.5%	65.5%
RepublicanBill Buckner	Republican	43,03134.5%	34.5%

Texas Senate District 18, 1968 to 2022, 1976, every candidate
Candidate	Party	Votes and share	Share
DemocraticWilliam PatmanWon(incumbent)	Democratic	85,435100.0%	100.0%
Scattered write-ins	Write-in	250.0%	0.0%

Votes for listed candidates: 81,181
Election day: November 7, 1972
District map: Older district map (1972 to 1981)

Texas Senate District 18, 1968 to 2022, 1972, every candidate
Candidate	Party	Votes and share	Share
DemocraticWilliam PatmanWon(incumbent)	Democratic	57,91771.3%	71.3%
RepublicanJack Tumlinson	Republican	23,26428.7%	28.7%

Texas Senate District 18, 1968 to 2022, 1968, every candidate
Candidate	Party	Votes and share	Share
DemocraticWilliam PatmanWon(incumbent)	Democratic	70,137100.0%	100.0%
Scattered write-ins	Write-in	110.0%	0.0%

1968 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

Last contest in this district on file: 2022.

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Cite this page

Election Wrld. (2026). Texas State Senate District 18, election results 1968 to 2022. https://www.electionwrld.com/tx/senate/18. Retrieved October 31, 2026.

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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:tx/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