If you want to vote in the Michigan primary but have not yet registered, you can still do so today, but you will have to go in person to your city or township clerk’s office.
Make sure you have a proof of residency with you.
You can then get registered and still have until 8 tonight to cast your ballot.
Remember when you go to vote, you will be asked to show a photo I-D.
However, if you do not have one, you will still be allowed to cast a ballot if you sign an affidavit attesting to your identity.
If you voted by absentee ballot and now want to have that ballot voided, you are out of luck.
There is no election day option to have it canceled.