GROSSE POINTE PARK, Mich. (AP) -- A marijuana decriminalization measure isn't expected to be on the November ballot in the Detroit suburb of Grosse Pointe Park following a mistake by organizers of the effort.
Safer Michigan Coalition, a Detroit-based nonprofit coordinating petition drives around Michigan, collected hundreds of signatures.
The Detroit Free Press reports (http://on.freep.com/1l9jsmc ), however, that Grosse Pointe Park officials found an incorrect date on one set of signatures that invalided the petition drive. Coalition co-founder Tim Beck says he mistakenly put the incorrect date on the form.
City officials say the date invalidated 106 of 596 signatures, making the total 490 -- fewer than the 495 needed to get on the ballot.
Supporters of marijuana decriminalization previously said the vote would mark a possible tipping point in the debate over the drug in Michigan.