Just go and vote on election day, say the early vote was fraud.
I did just that on a text message who was pushing me to vote early. They have been $999999 pushy. One dude threatened me.
Do it ahead of time. I just posted something on a Michigan news site. “If you have already voted and regret your vote it can be changed by going to your township or county clerk’s office. Your prior vote can be voided and you can revote there.” I kept it non-partisan.