A primary do-over might be taking voters to the post office instead of the polling station.

U.S. Senator Carl Levin, (D) Michigan, is supporting a mail-in ballot re-vote. Voters would receive ballots in the mail and drop their votes in the mailbox.

Levin says it's the least expensive re-vote option on the table.

"Anything is possible in this campaign season," says Professor Richard Hula, who heads MSU's political science department.

He says a mail-in revote is unheard of, but could potentially be the most plausible primary panacea.

"It seems mail-order primary is probably the only way to organize in time," Hula says.

A primary where you mail in your ballot, in theory, might be easier or less expensive, but it still poses some major logistical issues, including: Who votes? Who do we send ballots to? How do we prevent ballot tampering or fraud?

Senator Levin has said no one who voted in the Republican primary will be able to re-vote, but if everyone gets a ballot in the mail, there's potential for costly confusion.

"We've seen examples of horrendous results of badly run elections," Hula says. "We don't even know how to do this, and we do badly with elections we do know how to run!

"People are so desperate to have this happen, but there's no easy path," he continues.