On March 31, U.S. District Court Judge Philip Brimmer issued an opinion in Colorado Republican Party v Griswold, 1:23cv-1948. Existing law says that parties must let independents vote in their primaries. It also says that if a party which otherwise is entitled to a primary doesn’t want a primary, it is free to nominate by party meeeting. But, existing law says the party can’t switch to nomination by meeting unless three-fourths of the delegates to the state party convention agree.

The decision says the three-fourths provision violates Freedom of Association. Assuming the decision is not overturned on appeal, this probably means that parties can decide what type of nomination process to use by majority vote.