Michigan statute (MCL ยง168.931(1)(e)) is an extraordinary criminal law:
A priest, pastor, curate, or other officer of a religious society shall not for the purpose of influencing a voter at an election, impose or threaten to impose upon the voter a penalty of excommunication, dismissal, or expulsion, or command or advise the voter, under pain of religious disapproval.
Violation is a misdemeanor. Really. This is not the Onion.