Illinois Congressional District 09

Voters

Registered Voters: 546,415
Active Voters: 500,754 (91.6%)

Party Registration

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

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	74,329 (13.6%)	<10 (—)	2,327 (0.4%)
2023–2024	359,822 (65.9%)	84,613 (15.5%)	20,722 (3.8%)
2021–2022	252,475 (46.2%)	81,328 (14.9%)	26,816 (4.9%)
2019–2020	348,440 (63.8%)	135,990 (24.9%)	16,223 (3.0%)
2017–2018	257,432 (47.1%)	102,698 (18.8%)	27,042 (4.9%)
2015–2016	271,033 (49.6%)	119,370 (21.8%)	51,584 (9.4%)
2013–2014	159,799 (29.2%)	23,071 (4.2%)	25,421 (4.7%)
2011–2012	198,000 (36.2%)	35,066 (6.4%)	29,215 (5.3%)

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: 670,306
Citizen Voting Age Population (CVAP): 529,748

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	590,457	88.1%
Hispanic	79,853	11.9%
White	429,961	64.1%
Black	56,244	8.4%
Asian	81,091	12.1%
American Indian / Alaska Native	551	0.1%
Native Hawaiian / Pacific Islander	288	0.0%
Two or More Races	2,756	0.4%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	475,644	89.8%
Hispanic	54,106	10.2%
White	354,779	67.0%
Black	48,110	9.1%
Asian	68,425	12.9%
American Indian / Alaska Native	2,564	0.5%
Native Hawaiian / Pacific Islander	277	0.1%
Two or More Races	1,909	0.4%

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