 may 18 19 2012 state convention       may 1819 2012 ndash state convention cobo hall detroit        may 18 2012 congressional district causes   the delegates and alternates to the state convention shall causus in the fourteen 14 congressional district caucuses at 700 pm eastern time as determined by the state party chair on friday may 18 2012 in detroit at cobo convention center  may 19 2012 state convention   the michigan republican state committee directs the state convention of the delegated representatives of the republican party of michigan to be held at the cobo convention center in detroit on saturday may 19 2012 at 900 am eastern time        may 18 19 2012 state convention  