Americans may be waiting days to know the outcome of the presidential election if the vote count is as close in battleground states as polling suggests, as several key swing states don’t allow officials to start processing or counting mail-in ballots until Election Day—meaning it could take days to know who won.

As Election Day and the voting period approaches, some voters may be in need of an absentee ballot this election year.

More than 1 million Michigan voters have cast their ballots with only two weeks left until the November general election. In total, nearly 16 percent of the state’s active registered voters – or roughly 1.