Two years after the Supreme Court overturned Roe v. Wade, doing away with a half-century of precedent, activists worried that other high court decisions could be in jeopardy are taking their concerns to the polls. California, Colorado and Hawaii will soon allow their residents to vote on ballot measures that would remove language from their state constitutions prohibiting same-sex marriage.

The landmark 2015 Obergefell v. Hodges ruling, guaranteeing same-sex couples across the country the right to marry, makes these state bans unenforceable. However, these ballot measures seek to proactively protect these marriage rights should Obergefell ever be overturned.