Illinois State Senate District 16
Next vote Tue, Nov 3, 2026 · Represented by Willie Preston Democratic · Member list as of Oct 28
This seat has no race on the official 2026 list.
- Last election
- Willie Preston (Democratic) was unopposed, 2024
More about this seat
All State Senate districts
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
Vote in Illinois
Trouble voting? Election Protection hotline: 866-OUR-VOTE. A nonpartisan coalition of civil-rights and voting-rights groups, not a government service. 866ourvote.org
History (19 elections for this seat)
- Votes for listed candidates
- 53,401
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Illinois Senate District 16, 1970 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticWillie PrestonWon Democratic 53,401100.0% - Votes for listed candidates
- 38,713
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Illinois Senate District 16, 1970 to 2024, 2022, every candidate Candidate Party Votes and share Share DemocraticWillie PrestonWon Democratic 38,713100.0% - Votes for listed candidates
- 64,671
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Illinois Senate District 16, 1970 to 2024, 2020, every candidate Candidate Party Votes and share Share DemocraticJacqueline CollinsWon(incumbent) Democratic 64,671100.0% - Votes for listed candidates
- 67,984
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Illinois Senate District 16, 1970 to 2024, 2016, every candidate Candidate Party Votes and share Share DemocraticJacqueline CollinsWon(incumbent) Democratic 67,984100.0% - Votes for listed candidates
- 69,155
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Illinois Senate District 16, 1970 to 2024, 2012, every candidate Candidate Party Votes and share Share DemocraticJacqueline Jacqui CollinsWon(incumbent) Democratic 69,155100.0% - Votes for listed candidates
- 42,253
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
Illinois Senate District 16, 1970 to 2024, 2010, every candidate Candidate Party Votes and share Share DemocraticJacqueline CollinsWon(incumbent) Democratic 42,253100.0% - Votes for listed candidates
- 47,035
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
Illinois Senate District 16, 1970 to 2024, 2006, every candidate Candidate Party Votes and share Share DemocraticJacqueline CollinsWon(incumbent) Democratic 43,34992.2% RepublicanMatthew M. Szydagis Republican 3,6867.8% - Votes for listed candidates
- 50,831
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
Illinois Senate District 16, 1970 to 2024, 2002, every candidate Candidate Party Votes and share Share DemocraticJacqueline CollinsWon Democratic 45,16788.9% RepublicanRobert J. Pettis Republican 5,66411.1% - Votes for listed candidates
- 60,354
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Illinois Senate District 16, 1970 to 2024, 1998, every candidate Candidate Party Votes and share Share DemocraticDonne E. TrotterWon(incumbent) Democratic 54,62290.5% RepublicanJames Gutierrez Republican 5,7329.5% - Votes for listed candidates
- 65,933
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Illinois Senate District 16, 1970 to 2024, 1996, every candidate Candidate Party Votes and share Share DemocraticDonne E. TrotterWon(incumbent) Democratic 65,933100.0% - Votes for listed candidates
- 75,031
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Illinois Senate District 16, 1970 to 2024, 1992, every candidate Candidate Party Votes and share Share DemocraticDonne E. TrotterWon Democratic 75,031100.0% - Votes for listed candidates
- 60,758
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Illinois Senate District 16, 1970 to 2024, 1988, every candidate Candidate Party Votes and share Share DemocraticEthel Skyles AlexanderWon(incumbent) Democratic 60,758100.0% - Votes for listed candidates
- 45,776
- Election day
- November 4, 1986
- Type
- Special election
- District map
- Older district map (1982 to 1991)
Illinois Senate District 16, 1970 to 2024, 1986, every candidate Candidate Party Votes and share Share DemocraticEthel Skyles AlexanderWon Democratic 45,776100.0% - Votes for listed candidates
- 67,526
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Illinois Senate District 16, 1970 to 2024, 1984, every candidate Candidate Party Votes and share Share DemocraticCharles ChewWon(incumbent) Democratic 67,525100.0% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 66,868
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Illinois Senate District 16, 1970 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticCharles ChewWon(incumbent) Democratic 66,867100.0% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 70,000
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
Illinois Senate District 16, 1970 to 2024, 1978, every candidate Candidate Party Votes and share Share DemocraticRobert J. EganWon(incumbent) Democratic 40,36057.7% RepublicanWilliam K. Dammeier Republican 29,64042.3% - Votes for listed candidates
- 65,708
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
Illinois Senate District 16, 1970 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticRobert J. EganWon Democratic 34,28452.2% RepublicanEdward T. Scholl Republican 31,42447.8% - Votes for listed candidates
- 95,810
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Illinois Senate District 16, 1970 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanHoward T. SchollWon Republican 54,30956.7% DemocraticRobert J. Egan(incumbent) Democratic 41,49543.3% Scattered write-ins Write-in 60.0% - Votes for listed candidates
- 73,341
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
Illinois Senate District 16, 1970 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticRobert J. EganWon Democratic 41,65956.8% RepublicanWalter P. Hoffelder(incumbent) Republican 31,68243.2%
- 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.
Download and cite
Cite this page
Election Wrld. (2026). Illinois State Senate District 16, election results 1970 to 2024. https://www.electionwrld.com/il/senate/16. Retrieved October 31, 2026.
Embed this seat
<iframe src="https://www.electionwrld.com/embed/il/senate/16" title="Illinois Senate District 16" 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:16
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026