Illinois Congressional District 01

Voters

Registered Voters: 557,638
Active Voters: 508,054 (91.1%)

Party Registration

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

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	48,612 (8.7%)	13 (0.0%)	4,302 (0.8%)
2023–2024	335,889 (60.2%)	79,158 (14.2%)	22,918 (4.1%)
2021–2022	240,048 (43.0%)	76,896 (13.8%)	29,052 (5.2%)
2019–2020	344,050 (61.7%)	131,420 (23.6%)	17,213 (3.1%)
2017–2018	257,247 (46.1%)	105,819 (19.0%)	21,619 (3.9%)
2015–2016	293,631 (52.7%)	152,042 (27.3%)	41,523 (7.4%)
2013–2014	192,932 (34.6%)	41,350 (7.4%)	21,201 (3.8%)
2011–2012	244,226 (43.8%)	55,256 (9.9%)	22,462 (4.0%)

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: 712,256
Citizen Voting Age Population (CVAP): 551,937

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	647,432	90.9%
Hispanic	64,824	9.1%
White	269,153	37.8%
Black	349,691	49.1%
Asian	10,218	1.4%
American Indian / Alaska Native	817	0.1%
Native Hawaiian / Pacific Islander	68	0.0%
Two or More Races	2,264	0.3%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	511,294	92.6%
Hispanic	40,646	7.4%
White	213,486	38.7%
Black	283,736	51.4%
Asian	10,455	1.9%
American Indian / Alaska Native	3,727	0.7%
Native Hawaiian / Pacific Islander	62	0.0%
Two or More Races	1,793	0.3%

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