Lt. Gov. Brian Calley is being coy about an announcement he is expected to make after previously hinting toward a run for governor in 2018.
The Republican plans a "major" announcement Tuesday on Mackinac Island, on the eve of an annual gathering of business, political and civic leaders for the Detroit Regional Chamber's policy conference.
Calley, who has served as Gov. Rick Snyder's lieutenant since 2011, will make another announcement on Thursday.
For five weeks, an independent political action committee has been touting Calley in online ads and building anticipation for the Tuesday announcement.
Snyder cannot run again due to term limits. The only Republican who appears to be actively campaigning so far is Saginaw doctor Jim Hines.
Attorney General Bill Schuette also is expected to run.
