Democrats will soon control the governor's office and both legislative houses in Arizona, Michigan, Minnesota, Nevada, Pennsylvania and Wisconsin following last week's midterm elections. Party candidates also won governor races in Georgia, Iowa, Nevada, Ohio and Texas, raising the Democratic total to 29 states once those winners take office in early 2027, a majority the party has not held since 2010.

Those 29 states account for 347 electoral votes in the 2028 presidential contest. A comparable 2025 change in Virginia produced measures to ban popular semi-automatic firearms and magazines that remain paused pending court action.

Incoming majorities in the six states have previously advanced or endorsed limits including semi-automatic bans, magazine rules, universal background checks and higher purchase ages.