Arizona Congressional District 04

Voters

Registered Voters: 503,142
Active Voters: 419,278 (83.3%)

Party Registration

Party	Voters	Share
Democratic	148,135	29.4%
Republican	155,856	31.0%
Unaffiliated	0	0.0%
Other parties	26,297	5.2%
No party recorded	172,854	34.4%

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2023–2024	343,799 (68.3%)	61,050 (12.1%)	76,455 (15.2%)
2021–2022	252,296 (50.1%)	61,828 (12.3%)	73,742 (14.7%)
2019–2020	315,105 (62.6%)	1,402 (0.3%)	1,193 (0.2%)
2017–2018	210,583 (41.9%)	39,184 (7.8%)	47,735 (9.5%)
2015–2016	217,881 (43.3%)	23,993 (4.8%)	41,166 (8.2%)

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 01/05/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 744,669
Citizen Voting Age Population (CVAP): 588,045

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	563,370	75.7%
Hispanic	181,297	24.3%
White	445,417	59.8%
Black	39,267	5.3%
Asian	29,510	4.0%
American Indian / Alaska Native	13,149	1.8%
Native Hawaiian / Pacific Islander	2,098	0.3%
Two or More Races	5,797	0.8%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	466,525	79.3%
Hispanic	121,516	20.7%
White	378,782	64.4%
Black	37,409	6.4%
Asian	30,897	5.3%
American Indian / Alaska Native	15,405	2.6%
Native Hawaiian / Pacific Islander	1,393	0.2%
Two or More Races	3,220	0.5%

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