BISMARCK, N.D. (AP) — A group that wants to change the state constitution to require voter approval of constitutional amendments from a simple majority to 60% and limit a measure to a single subject is a step closer to bringing the matter to a public vote. Secretary of State Al Jaeger on Thursday announced he approved for circulation a petition for the proposed measure. The citizen-led Protect North Dakota’s Constitution believes the voter threshold for amending the state constitution isn’t high enough. Backers say the measures also often contained multiple issues.