There are so many different variations that there is no way most other states do this. For a good summary of how different states handle party registration and

There are so many different variations that there is no way most other states do this. For a good summary of how different states handle party registration and primaries checkout https://www.ncsl.org/research/elections-and-campaigns/primary-types.aspx https://www.ncsl.org/research/elections-and-campaigns/primar...