Mich. Comp. Laws § 168.483a

Sec. 483a. (1) The petition sponsor of a petition proposing an amendment to the constitution or to initiate legislation shall file the petition or an amended petition with the secretary of state. (2) The petition sponsor of a petition proposing an amendment to the constitution or to initiate legislation shall not circulate a petition or an amended petition for signatures until the petition or amended petition is filed with the secretary of state as required in subsection (1). (3) The secretary of state shall make the most recent submission of the petition language filed under subsection (1) available to the public on an internet website maintained by the department of state. (4) This section takes effect January 1, 2013.