LANSING (AP) — Michigan election officials say some 2 million people could cast ballots in Tuesday’s presidential primary.

If that’s the case, it would be highest voter turnout in a combined presidential primary since it was introduced 44 years ago.

READ MORE: CDC: New Listeria Outbreak Tied To 23 Illnesses, 1 Death

Secretary of state spokesman Fred Woodhams points out that there are contested primaries for both Democratic and Republican candidates in 2016, and both parties are using the primary to allocate delegates for their respective nominating conventions. The last time that happened was 1992.

Democrats, for instance, sometimes have had a caucus contest.

READ MORE: Red Wings Hire Lightning Assistant Derek Lalonde As Coach

Michigan has about 7.3 million registered voters. Polls are open from 7 a.m. to 8 p.m. on Tuesday.


MORE NEWS: Troubling Arsenic Levels Found At Some Detroit Demolition Sites

Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.