(1) Notwithstanding any general law or metropolitan charter to the contrary, the planning commission of any county having a metropolitan form of government shall recommend to the metropolitan council that councilmanic districts or school districts or both be reapportioned for either or both of the following reasons: To more closely conform the boundary lines of such districts to the boundary lines of state senate and state house of representatives districts in order to minimize voter inconvenience, to avoid split precincts, and to substantially reduce the expense of conducting elections in the county; and
(2) To correct drafting or typographical errors appearing in a previously adopted ordinance of reapportionment.
(3) If the planning commission determines that such districts should be reapportioned for either or both of the reasons enumerated by subdivision (a)(1), then the commission shall submit a proposed ordinance designed to accomplish its recommendations. The metropolitan council shall then act upon such ordinance in the procedural manner prescribed by controlling general law or metropolitan charter for other duly presented ordinances of reapportionment.
(4) The authority to reapportion granted by subsection (a) shall not be exercised more than once in regard to any ordinance of reapportionment that was previously enacted in direct response to either a federal decennial census or a court order.