Voters in Wisconsin will face a choice Tuesday of participating in a presidential primary election or heeding warnings from public health officials to stay away from large crowds during the coronavirus pandemic.

Hours after Democratic Gov. Tony Evers issued an order postponing the election for two months, the conservative-controlled Wisconsin Supreme Court on Monday sided with Republicans who said he didn’t have the authority to reschedule the race on his own. Conservative justices on the U.S. Supreme Court quickly followed with a ruling blocking Democratic efforts to extend absentee voting.

The decisions leave Wisconsin as the only state with an election scheduled in April that is proceeding as planned. As other states prepare to vote in May or June, Wisconsin will be closely watched for signs that fears of the coronavirus may depress turnout or cause other problems at the polls.

Evers said he had no other options after the state court ruled against him. “There’s not a Plan B. There’s not a Plan C,” Evers said earlier Monday.

Joe Biden already has a commanding delegate lead over Bernie Sanders and the Wisconsin results aren’t likely to slow his march to the Democratic presidential nomination. But the tumult in one of the most critical general election battlegrounds was a reminder of how the coronavirus has upended politics during an election year. Beyond the shifts in the primary calendar, Biden and President Donald Trump have not been able to hold in-person campaign events and have moved most of their operations online. Sanders called Tuesday’s election “dangerous” and said his campaign will not engage in any traditional get-out-the-vote efforts.

The tension in Wisconsin over whether and how to proceed with the election has been building for weeks. Evers and Republicans initially agreed it was imperative for the election to proceed because thousands of local offices are on the ballot Tuesday for terms that begin in two weeks. There is also a state Supreme Court election.