The state Supreme Court says parts of a proposal to transform Arizona's primary election system fit together as one proposal and didn't have to be kept off the November ballot.

The high court on Monday issued an opinion explaining why it allowed the proposed constitutional amendment, Proposition 121, to appear on the general election ballot

A trial judge had ruled that the proposal violated a constitutional standard that limits constitutional amendments to one subject.

However, the justices said the proposal's provisions were related and complied with the constitutional requirement.

Voters rejected the initiative proposal in November.

It would have allowed voters to cast ballots for any primary election candidate regardless of party. Also, the top two finishers in a race would advance to the general election regardless of party affiliation.