Missouri Congressional District 04

Voters

Registered Voters: 564,758
Active Voters: 523,117 (92.6%)

Party Registration

Party	Voters	Share
Democratic	26,785	4.7%
Republican	27,649	4.9%
Unaffiliated	91,147	16.1%
Other parties	906	0.2%
No party recorded	418,271	74.1%

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2025–2026	66,417 (11.8%)	0 (0.0%)	0 (0.0%)
2023–2024	398,601 (70.6%)	0 (0.0%)	0 (0.0%)
2021–2022	273,362 (48.4%)	0 (0.0%)	0 (0.0%)
2019–2020	359,659 (63.7%)	0 (0.0%)	0 (0.0%)
2017–2018	272,729 (48.3%)	0 (0.0%)	0 (0.0%)
2015–2016	291,225 (51.6%)	0 (0.0%)	0 (0.0%)
2013–2014	149,610 (26.5%)	0 (0.0%)	0 (0.0%)
2011–2012	251,500 (44.5%)	0 (0.0%)	0 (0.0%)

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 01/02/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 772,016
Citizen Voting Age Population (CVAP): 593,104

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	735,408	95.3%
Hispanic	36,608	4.7%
White	666,503	86.3%
Black	32,608	4.2%
Asian	5,724	0.7%
American Indian / Alaska Native	1,583	0.2%
Native Hawaiian / Pacific Islander	1,062	0.1%
Two or More Races	2,809	0.4%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	570,197	96.1%
Hispanic	22,906	3.9%
White	523,730	88.3%
Black	28,677	4.8%
Asian	6,814	1.1%
American Indian / Alaska Native	9,115	1.5%
Native Hawaiian / Pacific Islander	621	0.1%
Two or More Races	1,517	0.3%

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