It seemed to be a done deal, but the Oakland A’s agreement to secure public funding for the team’s planned ballpark in Las Vegas hit a new snag that could potentially derail the entire arrangement.

Schools Over Stadiums, an advocacy group linked to the Nevada State Education Association, has filed a referendum petition seeking to put the previously approved $380 million in public funding for the stadium on a statewide public ballot.

The group will need more than 102,000 valid signatures by July 2024 to qualify for the ballot in November of that year. But if successful, the A’s issue would go before Nevada voters at a time when voter support for private sports projects is often tenuous at best.