Illinois Congressional District 03

Voters

Registered Voters: 468,838
Active Voters: 424,010 (90.4%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	34,829 (7.4%)	<10 (—)	<10 (—)
2023–2024	276,778 (59.0%)	59,786 (12.8%)	19,362 (4.1%)
2021–2022	176,715 (37.7%)	56,027 (12.0%)	21,552 (4.6%)
2019–2020	270,610 (57.7%)	95,604 (20.4%)	14,179 (3.0%)
2017–2018	191,784 (40.9%)	64,976 (13.9%)	20,543 (4.4%)
2015–2016	212,924 (45.4%)	99,148 (21.1%)	36,471 (7.8%)
2013–2014	110,614 (23.6%)	19,983 (4.3%)	18,913 (4.0%)
2011–2012	148,713 (31.7%)	22,261 (4.7%)	20,773 (4.4%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

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Source: Civitech voter file snapshot as of 12/15/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 631,215
Citizen Voting Age Population (CVAP): 476,134

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	373,631	59.2%
Hispanic	257,585	40.8%
White	278,208	44.1%
Black	39,216	6.2%
Asian	41,433	6.6%
American Indian / Alaska Native	738	0.1%
Native Hawaiian / Pacific Islander	148	0.0%
Two or More Races	1,615	0.3%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	306,108	64.3%
Hispanic	170,029	35.7%
White	234,365	49.2%
Black	32,367	6.8%
Asian	36,289	7.6%
American Indian / Alaska Native	2,220	0.5%
Native Hawaiian / Pacific Islander	105	0.0%
Two or More Races	1,053	0.2%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation.