Voters must register by Friday to be eligible for June 23 primary – WRVO

“You know the winners declared on election night were never official winners anyway,” Czarny said. “They aren’t official until they are certified 25 days later. So the instant gratification of the results may be delayed unless the outcome is severely lopsided.”

https://www.wrvo.org/elections/2020-05-28/voters-must-register-by-friday-to-be-eligible-for-june-23-primary