Section 2. Initiative for constitutional convention. (1) The people may by initiative petition direct the secretary of state to submit to the qualified electors the question of whether there shall be an unlimited convention to revise, alter, or amend this constitution. The petition shall be signed by at least ten percent of the qualified electors of the state. That number shall include at least ten percent of the qualified electors in each of two-fifths of the legislative districts.
     (2) The secretary of state shall certify the filing of the petition in his office and cause the question to be submitted at the next general election.