Illinois State House District 42
Tue, Nov 3 · Represented by Margaret DeLaRosa Democratic · Member list as of Oct 28
Margaret DeLaRosaDemocratic · IncumbentStephanie W. TrussellRepublican
No published poll names both candidates.The last winner we have no longer holds this seat, so that result isn't shown.
- Last election
- Terra Costa Howard (Democratic) was unopposed, 2024
- On the 2026 ballot
- 2 candidates
More about this race
Candidates on the ballot
- Margaret DeLaRosaIncumbentDemocratic
- Stephanie W. TrussellRepublican
Party nominees only, not the certified ballot.
Source: elections.il.gov, dated Oct 28
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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
- 46,648
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Illinois House of Representatives District 42, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticTerra Costa HowardWon Democratic 40,91687.7% Scattered write-ins Write-in 5,73212.3% - Votes for listed candidates
- 44,316
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Illinois House of Representatives District 42, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share DemocraticTerra Costa HowardWon(incumbent) Democratic 25,82258.3% RepublicanStefanie Hood Republican 18,49441.7% - Votes for listed candidates
- 62,354
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Illinois House of Representatives District 42, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanAmy L. GrantWon(incumbent) Republican 32,34951.9% DemocraticKen Mejia-Beal Democratic 30,00548.1% - Votes for listed candidates
- 50,503
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
Illinois House of Representatives District 42, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanAmy L. GrantWon Republican 26,38152.2% DemocraticKathleen V. Carrier Democratic 24,12247.8% - Votes for listed candidates
- 55,003
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Illinois House of Representatives District 42, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanJeanne M. IvesWon(incumbent) Republican 33,44360.8% DemocraticKathleen V. Carrier Democratic 21,56039.2% - Votes for listed candidates
- 31,643
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
Illinois House of Representatives District 42, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanJeanne M. IvesWon(incumbent) Republican 31,643100.0% - Votes for listed candidates
- 50,780
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Illinois House of Representatives District 42, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanJeanne M. IvesWon Republican 31,29961.6% DemocraticWilliam R. Adams Democratic 19,48138.4% - Votes for listed candidates
- 35,875
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Illinois House of Representatives District 42, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanSandra M. PihosWon(incumbent) Republican 23,00764.1% DemocraticKathryn F. Vlahos Democratic 12,86835.9% - Votes for listed candidates
- 40,000
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Illinois House of Representatives District 42, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanSandra M. PihosWon(incumbent) Republican 40,000100.0% - Votes for listed candidates
- 34,585
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Illinois House of Representatives District 42, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share RepublicanSandra M. PihosWon(incumbent) Republican 21,49362.1% DemocraticThomas E. Hanlon Democratic 13,09237.9% - Votes for listed candidates
- 39,270
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Illinois House of Representatives District 42, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanSandra M. PihosWon(incumbent) Republican 39,270100.0% - Votes for listed candidates
- 34,246
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Illinois House of Representatives District 42, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanSandra M. PihosWon Republican 21,73763.5% DemocraticTerri Brzezinski Democratic 11,38633.3% LibertarianMichael E. Mandel Libertarian 1,1233.3% - Votes for listed candidates
- 44,302
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Illinois House of Representatives District 42, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanTimothy L. SchmitzWon(incumbent) Republican 27,31561.7% DemocraticBonnie Lee Kunkel Democratic 16,98738.3% - Votes for listed candidates
- 30,091
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Illinois House of Representatives District 42, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanTimothy L. SchmitzWon Republican 17,05356.7% DemocraticJuan R. Thomas Democratic 13,03843.3% - Votes for listed candidates
- 36,825
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Illinois House of Representatives District 42, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 23,81064.7% DemocraticBarbara Connell Vondrak Democratic 13,01535.3% - Votes for listed candidates
- 21,177
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
Illinois House of Representatives District 42, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 21,177100.0% - Votes for listed candidates
- 41,247
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Illinois House of Representatives District 42, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 27,48766.6% DemocraticEric J. Sanders Democratic 13,76033.4% - Votes for listed candidates
- 22,132
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1991)
Illinois House of Representatives District 42, 1968 to 2024, 1990, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 22,132100.0% - Votes for listed candidates
- 37,398
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Illinois House of Representatives District 42, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 25,80869.0% DemocraticJohn P. Ross Democratic 11,23830.1% OtherVernell Smith Other 3520.9% - Votes for listed candidates
- 23,088
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1991)
Illinois House of Representatives District 42, 1968 to 2024, 1986, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 16,12269.8% DemocraticThomas E. Blake Democratic 6,96630.2% - Votes for listed candidates
- 27,701
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Illinois House of Representatives District 42, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 27,701100.0% - Votes for listed candidates
- 25,854
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Illinois House of Representatives District 42, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share RepublicanSuzanne L. DeuchlerWon(incumbent) Republican 17,39767.3% DemocraticWilliam E. Glisson Democratic 8,45432.7% Scattered write-ins Write-in 30.0% - Votes for listed candidates
- 272,492
- Election day
- November 4, 1980
- Seats
- 3
- District map
- Older district map (1972 to 1981)
Illinois House of Representatives District 42, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share RepublicanJack DavisWon(incumbent) Republican 80,58529.6% RepublicanHarry D. LeinenweberWon(incumbent) Republican 75,92627.9% DemocraticLeroy VanduyneWon(incumbent) Democratic 73,69727.1% DemocraticLloyd William Betourney Democratic 42,28415.5% - Votes for listed candidates
- 177,829
- Election day
- November 7, 1978
- Seats
- 3
- District map
- Older district map (1972 to 1981)
Illinois House of Representatives District 42, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share RepublicanHarry D. LeinenweberWon(incumbent) Republican 50,53928.4% RepublicanJack DavisWon(incumbent) Republican 47,87326.9% DemocraticLeroy VanduyneWon(incumbent) Democratic 45,10525.4% DemocraticJoseph R. Trizna Democratic 34,31219.3% - Votes for listed candidates
- 262,013
- Election day
- November 2, 1976
- Seats
- 3
- District map
- Older district map (1972 to 1981)
Illinois House of Representatives District 42, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share RepublicanHarry D. LeinenweberWon(incumbent) Republican 73,14427.9% DemocraticLeroy VanduyneWon(incumbent) Democratic 71,53427.3% RepublicanJack DavisWon Republican 60,93623.3% DemocraticJohn C. McGuire Democratic 56,39921.5% - Votes for listed candidates
- 140,080
- Election day
- November 4, 1974
- Seats
- 3
- District map
- Older district map (1972 to 1981)
Illinois House of Representatives District 42, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticGeorge E. SangmeisterWon(incumbent) Democratic 44,68231.9% DemocraticLeroy VanduyneWon Democratic 36,50626.1% RepublicanHarry D. LeinenweberWon(incumbent) Republican 29,93521.4% RepublicanW. Robert Blair(incumbent) Republican 28,95720.7% - Votes for listed candidates
- 225,918
- Election day
- November 7, 1972
- Seats
- 3
- District map
- Older district map (1972 to 1981)
Illinois House of Representatives District 42, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanW. Robert BlairWon(incumbent) Republican 71,55231.7% DemocraticGeorge E. SangmeisterWon Democratic 59,28526.2% RepublicanHarry D. LeinenweberWon Republican 54,16924.0% DemocraticEugene F. Duff Democratic 40,91218.1% - Votes for listed candidates
- 183,843
- Election day
- November 3, 1970
- Seats
- 3
- District map
- Older district map (1966 to 1971)
Illinois House of Representatives District 42, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share RepublicanJames R. WashburnWon(incumbent) Republican 56,76330.9% RepublicanThomas R. HoudeWon(incumbent) Republican 50,62327.5% DemocraticC. R. HamiltonWon(incumbent) Democratic 41,02522.3% DemocraticWilliam F. Shea Democratic 35,43219.3% - Votes for listed candidates
- 226,196
- Election day
- November 5, 1968
- Seats
- 3
- District map
- Older district map (1966 to 1971)
Illinois House of Representatives District 42, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanJames R. WashburnWon(incumbent) Republican 70,61131.2% RepublicanThomas R. HoudeWon(incumbent) Republican 68,41530.3% DemocraticC. R. HamiltonWon Democratic 44,69819.8% DemocraticJoseph Callahan Democratic 42,47218.8%
- 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). Illinois State House District 42, election results 1968 to 2024. https://www.electionwrld.com/il/house/42. 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; 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/sldl:42
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026