The Nevada Supreme Court said Wednesday it will hear from the state and both major parties at a June 28 hearing in Carson City regarding the rules for the upcoming 2nd district special election, the Associated Press reported.

That’s one week before the July 6 date that Secretary of State Ross Miller (D) said the candidates would need to be set by so the state’s vendors can begin printing ballots for the scheduled Sept. 13 election.

At issue is how many candidates can run under a major party label. Republicans successfully argued in the lower court that without a primary, the parties’ central committees should have the power to nominate a single candidate.

The state of Nevada and the state Democratic Party appealed that ruling to the state Supreme Court, arguing that state law gives no such authority and that candidates may run under whatever party they please.

Currently, 28 candidates are filed to run, including 14 Republicans and nine Democrats.

The Supreme Court has asked about the possibility of delaying the special election to give it more time to review the case. Both parties said they were amenable to a delay, though the state GOP prefers a quicker decision and argued it is not clear who has the legal authority to change the date.

Republicans are meeting June 18 in Sparks to select their nominee and pick a new chairman. Former state GOP Chairman Mark Amodei is a frontrunner for the nomination, although several other Republicans are in the running. The leading Democrat is state Treasurer Kate Marshall.