Support the grassroots get-out-the-vote organizations that do this work best, with the Movement Voter Project. Host an MVP event to get your networks involved, too.
Want to get out into swing states and knock on doors? Check out Seed the Vote.
Join Swing Left to help win strategic legislative seats that will prevent future gerrymandering.
Want to learn about the history of voting rights and voter suppression? Here’s a reading list: Ari Berman and Carol Anderson’s books are especially good to start with.