Michigan Attorney General Bill Schuette (40%) leads Lt. Gov. Brian Calley (18%) by 22% with Dr. Jim Hines (10%), and state Senator Patrick Colbeck (9%) fighting for third place in the race for the Republican nomination for governor according to a statewide poll commissioned by MIRS (Michigan Information Research Services) and conducted by Mitchell Research Communications of likely voters in the upcoming August 7th Republican Primary Election. Twenty-three percent of the voters were undecided.
The IVR (Interactive Voice Response) automated statewide survey of N=413 Likely GOP Primary voters was conducted Monday, July 30, 2018. It has a Margin of Error of + or – 5% at the 95% level of confidence.
https://www.realclearpolitics.com/docs/Mitchell_Poll_GOV-SEN_11_CD-GOP_Primary_Press_Release__8-1-2018.pdf