An NBC News Decision Desk analysis of voter file data in seven states found that Democrats managed to reverse or slow their registration decline over the past year.

After having suffered massive voter registration losses in the wake of the last presidential election, Democrats have stemmed the bleeding in several key states heading into this year’s midterms, according to an NBC News Decision Desk analysis.

NBC News’ Decision Desk analyzed voter file data from TargetSmart, a progressive data firm, for seven of the states that were the closest in the 2024 election and that registered voters by party: Arizona, Maine, Nevada, New Hampshire, New Jersey, North Carolina and Pennsylvania. From late 2024 through late 2025, Republicans significantly improved their voter registration margin over Democrats in all seven states, including by a net of roughly 100,000 in Pennsylvania and North Carolina.

But from late 2025 through the middle of this year, Democrats managed to reverse, though not completely erase, those losses in five of them, adding more registrants on net than Republicans in Arizona, Maine, Nevada, New Jersey and Pennsylvania. And in New Hampshire and North Carolina, Democrats have slowed the decline.