The Newark Star-Ledger has this story about Balsam v Guadagno, the federal lawsuit filed on March 5 on behalf of some voters who want to vote in party primaries but who don’t want to join those parties, not even for one day.
New Jersey lets independent voters vote in partisan primaries, but if they do, they are then entered on the voter registration records as members of the party whose primary ballot they chose. They are free to fill out a new voter registration form, regaining independent status, as soon as they have voted in the primary.
Ironically, independent voters in New Jersey have more choices on primary day than members of qualified parties. On primary day, registered party members can only choose the primary ballot of the party they are registered with; they can’t change party affiliation on primary day.