two of the top candidates for the Republican nomination for governor, didn't submit enough valid petition signatures to make the ballot, according to findings from the Michigan Bureau of Elections.
...
the bureau said it had tracked 36 petition circulators "who submitted fraudulent petition sheets consisting entirely of invalid signatures."
The bureau found that [the former Detroit police Chief]'s campaign had turned in 11,113 invalid signatures, including 9,879 signatures from "fraudulent petition circulators." Only 10,192 of the 21,305 signatures [he] submitted were "facially valid," leaving him short of the 15,000 signature threshold, according to the bureau.