Illinois State Senate District 55
Next vote Tue, Nov 3, 2026 · Represented by Jason Plummer Republican · Member list as of Oct 28
This seat has no race on the official 2026 list.
- Last election
- Jason Plummer (Republican) was unopposed, 2024
More about this seat
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- Nonpartisan
- More than one party
- No member listed
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History (18 elections for this seat)
- Votes for listed candidates
- 95,805
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Illinois Senate District 55, 1970 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanJason PlummerWon Republican 95,805100.0% - Votes for listed candidates
- 75,849
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Illinois Senate District 55, 1970 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanJason PlummerWon(incumbent) Republican 75,849100.0% - Votes for listed candidates
- 101,736
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Illinois Senate District 55, 1970 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanDarren BaileyWon Republican 78,01076.7% DemocraticCynthia Ann Given Democratic 23,72623.3% - Votes for listed candidates
- 83,806
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Illinois Senate District 55, 1970 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanDale A. RighterWon(incumbent) Republican 83,806100.0% - Votes for listed candidates
- 78,776
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Illinois Senate District 55, 1970 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanDale A. RighterWon(incumbent) Republican 78,776100.0% - Votes for listed candidates
- 71,758
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Illinois Senate District 55, 1970 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanDale A. RighterWon(incumbent) Republican 51,56971.9% DemocraticJosh Weger Democratic 20,18928.1% - Votes for listed candidates
- 57,705
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Illinois Senate District 55, 1970 to 2024, 2006, every candidate Candidate Party Votes and share Share RepublicanDale A. RighterWon(incumbent) Republican 57,705100.0% - Votes for listed candidates
- 47,980
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Illinois Senate District 55, 1970 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanDale A. RighterWon Republican 47,980100.0% - Votes for listed candidates
- 62,755
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Illinois Senate District 55, 1970 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon(incumbent) Republican 43,47769.3% DemocraticKristi Vetri Democratic 19,27830.7% - Votes for listed candidates
- 77,864
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Illinois Senate District 55, 1970 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon(incumbent) Republican 52,82367.8% DemocraticDavid Ahola Democratic 25,04132.2% - Votes for listed candidates
- 87,421
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Illinois Senate District 55, 1970 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon(incumbent) Republican 48,40255.4% DemocraticCraig Virgin Democratic 39,01944.6% - Votes for listed candidates
- 79,402
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Illinois Senate District 55, 1970 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon(incumbent) Republican 50,84164.0% DemocraticWilma R. Pidgeon Democratic 28,56136.0% - Votes for listed candidates
- 81,653
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Illinois Senate District 55, 1970 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon(incumbent) Republican 52,00663.7% DemocraticDavid Vaught Democratic 29,64636.3% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 56,850
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Illinois Senate District 55, 1970 to 2024, 1982, every candidate Candidate Party Votes and share Share RepublicanFrank WatsonWon Republican 33,02558.1% DemocraticHerbert B. Schlarmann Democratic 23,82541.9% - Votes for listed candidates
- 57,181
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
Illinois Senate District 55, 1970 to 2024, 1978, every candidate Candidate Party Votes and share Share DemocraticJames H. DonnewaldWon(incumbent) Democratic 36,24663.4% RepublicanJack Brown Republican 20,93536.6% - Votes for listed candidates
- 57,286
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
Illinois Senate District 55, 1970 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticJames H. DonnewaldWon(incumbent) Democratic 34,65960.5% RepublicanHerschel Kasten Republican 22,62739.5% - Votes for listed candidates
- 79,409
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Illinois Senate District 55, 1970 to 2024, 1972, every candidate Candidate Party Votes and share Share DemocraticJames H. DonnewaldWon(incumbent) Democratic 42,85254.0% RepublicanKathleen Odell Republican 36,55746.0% - Votes for listed candidates
- 71,145
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
Illinois Senate District 55, 1970 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticTerry L. BruceWon Democratic 37,33152.5% RepublicanGeorge W. Woodcock Republican 33,81447.5%
- 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
- 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
Last contest in this district on file: 2024.
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Cite this page
Election Wrld. (2026). Illinois State Senate District 55, election results 1970 to 2024. https://www.electionwrld.com/il/senate/55. Retrieved October 31, 2026.
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<iframe src="https://www.electionwrld.com/embed/il/senate/55" title="Illinois Senate District 55" 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; 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:il/sldu:55
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026