Oklahoma State House District 12
Tue, Nov 3 · Represented by Mark Chapman Republican · Member list as of Oct 28
Mark ChapmanRepublican · Incumbent2 years since first winTiffany PraterDemocratic
No published poll names both candidates.Last result · 2024 general: Mark Chapman (R) 79.1, Crystal Lagrone (D) 21.0
- Last election
- Mark Chapman (Republican) won by 58.1 points, 2024
- On the 2026 ballot
- 2 candidates
Side by side
Left column: ChapmanRight column: Prater
- Races
- Won 1 of 1
- None listed
- Years since first win
- 2
- Not available
How these are counted
Wins and losses count the races in our results files, the same as each profile.
More about this race
Candidates on the ballot
- Tiffany PraterDemocratic
- Mark ChapmanIncumbentRepublican
This list may not include every candidate. See the official list at the Oklahoma State Election Board
Source: hosting.okelections.us, dated Oct 28
All State House districts
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- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
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History (29 elections for this seat)
- Votes for listed candidates
- 20,468
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Oklahoma House of Representatives District 12, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMark ChapmanWon Republican 16,18079.0% DemocraticCrystal Lagrone Democratic 4,28820.9% - Votes for listed candidates
- 14,146
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Oklahoma House of Representatives District 12, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanKevin McDugleWon(incumbent) Republican 10,78576.2% DemocraticCrystal Lagrone Democratic 3,36123.8% - Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Oklahoma House of Representatives District 12, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanKevin McDugleWon(incumbent) Republican —— - Votes for listed candidates
- 11,987
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
Oklahoma House of Representatives District 12, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanKevin McDugleWon(incumbent) Republican 7,17659.9% DemocraticCyndi Ralston Democratic 4,81140.1% - Votes for listed candidates
- 14,494
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Oklahoma House of Representatives District 12, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanKevin McDugleWon Republican 8,79860.7% DemocraticDarla Milligan Democratic 5,69639.3% - Votes for listed candidates
- 8,117
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
Oklahoma House of Representatives District 12, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon(incumbent) Democratic 4,30853.1% RepublicanDavid Tackett Republican 3,80946.9% - Votes for listed candidates
- 13,616
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Oklahoma House of Representatives District 12, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon(incumbent) Democratic 7,34453.9% RepublicanDavid Tackett Republican 6,27246.1% - Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Oklahoma House of Representatives District 12, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon(incumbent) Democratic —— - Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Oklahoma House of Representatives District 12, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon(incumbent) Democratic —— - Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Oklahoma House of Representatives District 12, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon(incumbent) Democratic —— - Votes for listed candidates
- 15,055
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Oklahoma House of Representatives District 12, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share DemocraticWade RousselotWon Democratic 7,64750.8% RepublicanMark Wofford Republican 7,40849.2% - Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Oklahoma House of Representatives District 12, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic —— - Votes for listed candidates
- 13,696
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Oklahoma House of Representatives District 12, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic 8,50762.1% RepublicanCecil Kusler Republican 5,18937.9% - Votes for listed candidates
- 9,902
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Oklahoma House of Representatives District 12, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic 5,94160.0% RepublicanDavid Lancaster Republican 3,96140.0% - Votes for listed candidates
- 12,946
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Oklahoma House of Representatives District 12, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic 7,27956.2% RepublicanJerry Hill Republican 5,66743.8% - Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
Oklahoma House of Representatives District 12, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic —— - Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Oklahoma House of Representatives District 12, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic —— - Election day
- November 6, 1990
- District map
- Older district map (1982 to 1991)
Oklahoma House of Representatives District 12, 1968 to 2024, 1990, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon(incumbent) Democratic —— - Votes for listed candidates
- 11,863
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Oklahoma House of Representatives District 12, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share DemocraticJerry W. HefnerWon Democratic 8,26269.7% RepublicanJim Jones Republican 3,60130.4% - Election day
- November 4, 1986
- District map
- Older district map (1982 to 1991)
Oklahoma House of Representatives District 12, 1968 to 2024, 1986, every candidate Candidate Party Votes and share Share DemocraticRobert T. HarrisWon(incumbent) Democratic —— - Votes for listed candidates
- 12,455
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Oklahoma House of Representatives District 12, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share DemocraticRobert T. HarrisWon Democratic 8,54068.6% RepublicanJohn S. Gottstein Republican 3,91531.4% - Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Oklahoma House of Representatives District 12, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticBill LancasterWon(incumbent) Democratic —— - Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
Oklahoma House of Representatives District 12, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share DemocraticBill LancasterWon(incumbent) Democratic —— - Votes for listed candidates
- 9,693
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
Oklahoma House of Representatives District 12, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share DemocraticBill LancasterWon(incumbent) Democratic 6,18263.8% RepublicanScott Landon Republican 3,51136.2% - Votes for listed candidates
- 12,299
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
Oklahoma House of Representatives District 12, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share DemocraticBill LancasterWon Democratic 8,82171.7% RepublicanC. Wayne Woodward Republican 3,47828.3% - Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
Oklahoma House of Representatives District 12, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticV. H. OdomWon(incumbent) Democratic —— - Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Oklahoma House of Representatives District 12, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share DemocraticV. H. OdomWon(incumbent) Democratic —— - Votes for listed candidates
- 8,855
- Election day
- November 3, 1970
- District map
- Older district map (1964 to 1971)
Oklahoma House of Representatives District 12, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticV. H. OdomWon(incumbent) Democratic 8,855100.0% - Votes for listed candidates
- 11,274
- Election day
- November 5, 1968
- District map
- Older district map (1964 to 1971)
Oklahoma House of Representatives District 12, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share DemocraticV. H. OdomWon(incumbent) Democratic 11,274100.0%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
- 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: 2024.
Download and cite
Cite this page
Election Wrld. (2026). Oklahoma State House District 12, election results 1968 to 2024. https://www.electionwrld.com/ok/house/12. Retrieved October 31, 2026.
Embed this seat
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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; MEDSL 2024 official precinct returns (individual_states zips) (Not stated in the GitHub repository (an earlier label said "MIT (repo)", which the repository does not support). MEDSL's Harvard Dataverse records are CC0 1.0, but these GitHub files were not checksum-matched to the Dataverse files, so CC0 is not claimed for them.), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) 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:ok/sldl:12
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026