- Open primaries allow any registered voter to choose any candidate, regardless of political party. For example, if a person is a registered Republican but prefers to vote in the Democratic primary, it would be possible in an open primary.
- Closed primaries allow only those who are registered with a particular party to vote in the primary. For example, if the Democratic party chose a closed primary in a particular state, only registered Democrats would be able to vote in that primary. It is also possible that one party might hold an open primary while the other holds a closed primary. For example, if the Democratic primary is closed and the Republican open, a registered Democrat would be able to vote in either primary.
- Caucuses are also considered part of the primary process. However, instead of formally casting a vote, community members gather and discuss their options, eventually choosing one candidate to support.














