Sumter County Voter Registration
Monthly voter registration tracking for Sumter County from May 2025 to Feb 2026. Active voters have decreased by 2,359. Republican voters lead with 76,140. Active voter counts may fluctuate month-to-month due to routine maintenance activities including the removal of inactive voters, deceased individuals, and duplicate registrations.
Key Insights
Registration Trend
Active voter registration has declined by 1.8% since May 2025, a net change of -2,359 voters.
Party Leadership
Republican voters lead with 76,140 registrations, a margin of 48,917 (38.7%) over Other/NPA voters.
Fastest Moving Party
Republican registration is the fastest growing party at +1.0% since May 2025.
Largest Age Group
The 76+ age group is the largest voting bloc with 46,410 voters (36.7% of active registrations).
Party Switching
Republican voters have seen a net gain of 218 voters through party switches over the tracked period.
Momentum
Voter registration growth is accelerating — the latest month added 984 voters compared to 912 the prior month.