Illinois Congressional District 13

Voters

Registered Voters: 533,279
Active Voters: 501,482 (94.0%)

Party Registration

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

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	87,357 (16.4%)	4,104 (0.8%)	<10 (—)
2023–2024	333,608 (62.6%)	35,108 (6.6%)	32,776 (6.1%)
2021–2022	242,658 (45.5%)	42,857 (8.0%)	44,136 (8.3%)
2019–2020	306,451 (57.5%)	72,843 (13.7%)	25,775 (4.8%)
2017–2018	238,115 (44.7%)	55,968 (10.5%)	34,663 (6.5%)
2015–2016	257,206 (48.2%)	80,643 (15.1%)	65,718 (12.3%)
2013–2014	167,250 (31.4%)	30,569 (5.7%)	31,238 (5.9%)
2011–2012	210,254 (39.4%)	26,445 (5.0%)	31,048 (5.8%)

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: 719,762
Citizen Voting Age Population (CVAP): 569,471

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	688,671	95.7%
Hispanic	31,091	4.3%
White	498,673	69.3%
Black	140,345	19.5%
Asian	17,452	2.4%
American Indian / Alaska Native	779	0.1%
Native Hawaiian / Pacific Islander	186	0.0%
Two or More Races	3,029	0.4%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	549,031	96.4%
Hispanic	20,442	3.6%
White	415,290	72.9%
Black	109,959	19.3%
Asian	16,335	2.9%
American Indian / Alaska Native	7,262	1.3%
Native Hawaiian / Pacific Islander	151	0.0%
Two or More Races	1,519	0.3%

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