Oregon Congressional District 04

Voters

Registered Voters: 640,288
Active Voters: 522,243 (81.6%)

Party Registration

Party	Voters	Share
Democratic	197,197	30.8%
Republican	151,658	23.7%
Unaffiliated	241,559	37.7%
Other parties	49,874	7.8%
No party recorded	0	0.0%

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2023–2024	396,895 (62.0%)	0 (0.0%)	0 (0.0%)
2021–2022	336,026 (52.5%)	0 (0.0%)	0 (0.0%)
2019–2020	376,856 (58.9%)	0 (0.0%)	0 (0.0%)
2017–2018	287,173 (44.9%)	0 (0.0%)	0 (0.0%)
2015–2016	293,166 (45.8%)	0 (0.0%)	0 (0.0%)
2013–2014	219,010 (34.2%)	0 (0.0%)	0 (0.0%)
2011–2012	238,562 (37.3%)	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 10/02/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 689,975
Citizen Voting Age Population (CVAP): 569,000

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	632,088	91.6%
Hispanic	57,888	8.4%
White	571,124	82.8%
Black	5,472	0.8%
Asian	13,378	1.9%
American Indian / Alaska Native	6,042	0.9%
Native Hawaiian / Pacific Islander	1,027	0.1%
Two or More Races	4,998	0.7%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	531,438	93.4%
Hispanic	37,565	6.6%
White	484,691	85.2%
Black	7,710	1.4%
Asian	18,243	3.2%
American Indian / Alaska Native	16,899	3.0%
Native Hawaiian / Pacific Islander	913	0.2%
Two or More Races	3,257	0.6%

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