NEW DATA: House Battleground Voter Registration Trends Shift Sharply Toward GOP

New district-by-district voter registration analysis across 28 battleground congressional districts shows Republicans rapidly gaining ground while House Democrats continue losing support in the districts that will decide the majority in 2026.

Since the 2024 election alone, Republicans have gained more than 229,000 voters relative to Democrats across these battleground districts, amounting to a 1.5-point shift toward the GOP in just over a year.

• Republicans are actively growing registration share in 19 of the 28 districts analyzed.
• Democrats have lost registration share in 27 of the 28 districts.
• Every single district analyzed has seen net Republican growth relative to Democrats since 2020, totaling nearly 737,000 voters.
• Republicans have gained roughly five points in registration margin across the battleground since the last midterm cycle.
• The largest shifts are taking place across key battleground seats in Iowa, Florida, North Carolina, Nebraska, New Mexico, and Maine.

“The battleground map keeps moving in Republicans’ direction, and this data shows Democrats are running out of places to hide. Republicans are welcoming voters with open arms, expanding the electorate, and building long-term strength in swing districts while Democrats continue losing ground cycle after cycle.” – NRCC Spokesman Mike Marinella