Illinois Congressional District 08

Voters

Registered Voters: 492,942
Active Voters: 460,145 (93.3%)

Party Registration

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

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	76,509 (15.5%)	12 (0.0%)	<10 (—)
2023–2024	312,316 (63.4%)	36,542 (7.4%)	28,579 (5.8%)
2021–2022	205,620 (41.7%)	41,589 (8.4%)	35,792 (7.3%)
2019–2020	297,504 (60.4%)	69,985 (14.2%)	22,623 (4.6%)
2017–2018	205,259 (41.6%)	47,651 (9.7%)	32,907 (6.7%)
2015–2016	228,741 (46.4%)	69,983 (14.2%)	58,259 (11.8%)
2013–2014	129,454 (26.3%)	8,787 (1.8%)	31,423 (6.4%)
2011–2012	169,066 (34.3%)	16,657 (3.4%)	32,280 (6.5%)

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: 654,609
Citizen Voting Age Population (CVAP): 495,534

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	511,506	78.1%
Hispanic	143,102	21.9%
White	380,263	58.1%
Black	32,354	4.9%
Asian	79,526	12.1%
American Indian / Alaska Native	338	0.1%
Native Hawaiian / Pacific Islander	206	0.0%
Two or More Races	2,360	0.4%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	408,970	82.5%
Hispanic	86,566	17.5%
White	314,133	63.4%
Black	25,751	5.2%
Asian	65,546	13.2%
American Indian / Alaska Native	1,933	0.4%
Native Hawaiian / Pacific Islander	183	0.0%
Two or More Races	1,653	0.3%

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