E Increasing the number of inhabitants required to create a new county and providing a new standard of market value for proposed new counties, requiring determination by the commissioner of revenue; modifying certain inhabitant and market value requirements for existing counties; specifying certain new county petition signature requirements, requiring the secretary of state to certify the validity of the signatures on the petition based on information to be supplied by the county auditor; clarifying certain vote canvassing requirements for gubernatorial proclamation purposes; modifying the procedure for filling vacancies in county commissioner districts after a change of boundaries, providing for a special election and eliminating certain gubernatorial appointment requirements; repealing a certain provision providing for the qualification of commissioners at large (mk, ja)