Political leaders on Sunday debated the idea of again holding votes in Michigan and Florida using a mail-in ballot to resolve the issue of delegates from those states being barred from participating in the nominating process.
Democrats agree that new voting is needed to determine convention delegates for Florida and Michigan, but the question is how.
"Every voter gets a ballot in the mail. It's comprehensive. You get to vote if you're in Iraq or in a nursing home," he said on CBS' "Face the Nation."
The problem, Dean said, is figuring out who would foot the bill.
"We have never conducted a mail-in ballot in Florida, and in an election that is this important, an experiment like that is -- now is not the time to test that," she said on "Fox News Sunday."
"There's no way to have a primary. That's state law. That can't be changed, and that can't be paid for," he said on ABC's "Face the Nation."