Arkansas has always had open primaries. But starting in 2026, registered Democrats won’t be able to vote in Republican primaries. Several years ago the state added a question about party membership to the voter registration form. The vast majority of Arkansas voters haven’t had to use the new form, so they continue to be unaffiliated with any party. But the Arkansas Republican Party recently passed a rule that says people who have registered with a party can’t vote in future Republican primaries, unless of course they had joined the Republican Party.
There are 86,497 registered Democrats, 742 registered Libertarians, and 120 registered Greens, and they won’t be able to vote in future Republican primaries. However, they can change their registration at any time, even as late as primary day.