Connecticut Congressional District 04

Voters

Registered Voters: 488,458
Active Voters: 421,768 (86.3%)

Party Registration

Party	Voters	Share
Democratic	185,479	38.0%
Republican	101,416	20.8%
Unaffiliated	194,587	39.8%
Other parties	6,976	1.4%
No party recorded	0	0.0%

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2023–2024	342,191 (70.1%)	0 (0.0%)	0 (0.0%)
2021–2022	241,763 (49.5%)	0 (0.0%)	0 (0.0%)
2019–2020	320,804 (65.7%)	0 (0.0%)	0 (0.0%)
2017–2018	231,177 (47.3%)	0 (0.0%)	0 (0.0%)
2015–2016	251,689 (51.5%)	0 (0.0%)	0 (0.0%)
2013–2014	151,801 (31.1%)	0 (0.0%)	0 (0.0%)
2011–2012	194,745 (39.9%)	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.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 11/04/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 644,724
Citizen Voting Age Population (CVAP): 489,886

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	520,453	80.7%
Hispanic	124,267	19.3%
White	402,607	62.4%
Black	70,072	10.9%
Asian	31,496	4.9%
American Indian / Alaska Native	700	0.1%
Native Hawaiian / Pacific Islander	123	0.0%
Two or More Races	2,514	0.4%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	409,054	83.5%
Hispanic	80,828	16.5%
White	321,914	65.7%
Black	58,450	11.9%
Asian	26,044	5.3%
American Indian / Alaska Native	1,330	0.3%
Native Hawaiian / Pacific Islander	108	0.0%
Two or More Races	1,453	0.3%

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