Democrat voters don’t have to vote in order for their vote to tally. Just watch any election in metro Atlanta where late arriving ballots suddenly tip a race the right way. Same for late counted absentee votes.
They can sleep in; their vote will be processed for them.
That used to happen in Detroit but I’m not sure it will happen this time. We have new laws that require state oversight and auditing of traditional problem areas. Its one of the reasons Detroit has their first white mayor in nearly 50 years.