All counties
Updated Dec 2025
Jefferson County Voter Registration
Monthly voter registration tracking for Jefferson County from May 2025 to Dec 2025. Active voters have increased by 158. Republican voters lead with 4,642. Active voter counts may fluctuate month-to-month due to routine maintenance activities including the removal of inactive voters, deceased individuals, and duplicate registrations.
Active Voters
9,819
+21 vs last month
Republican
4,642
+18 vs last month
Democratic
3,819
-7 vs last month
Other
1,358
+10 vs last month
New Registrations
23in Nov 2025
Republican
Democratic
Other
Party Switches
Jun 2025 – Dec 2025Net changes from affiliation switches
REP+26
DEM-21
OTH
Age & Party Distribution
Dec 2025Largest group: 66-75 (20%)
Republican
Democratic
Other