In many states Green, Libertarian, and other third-party groups conduct their own primaries to nominate candidates.
Some states' party primaries allow participation from registered Independents, or members of other parties. If you are a registered Independent and would like to vote in a party primary, please indicate that party on your voter registration form.
Most Secretary of State websites provide further information about which parties allow unaffiliated voters to participate in their primary election. You can find your state’s website by going to the State Voting Requirements page. Choose your state, and on the following page select your election location, and “State Lookup Tools” to find a link for your state's election website.