Constitution of the State of Ohio Art. XI, § 13

The supreme court of Ohio shall have exclusive, original jurisdiction in all cases arising under this Article.  In the event that any section of this Constitution relating to apportionment or any plan of apportionment made by the persons responsible for apportionment, by a majority of their number, is determined to be invalid by either the supreme court of Ohio, or the supreme court of the United States, then notwithstanding any other provisions of this Constitution, the persons responsible for apportionment by a majority of their number shall ascertain and determine a plan of apportionment in conformity with such provisions of this Constitution as are then valid, including establishing terms of office and election of members of the general assembly from districts designated in the plan, to be used until the next regular apportionment in conformity with such provisions of this Constitution as are then valid.

Notwithstanding any provision of this Constitution or any law regarding the residence of senators and representatives, a plan of apportionment made pursuant to this section shall allow thirty days for persons to change residence in order to be eligible for election.

The governor shall give the persons responsible for apportionment two weeks advance written notice of the date, time, and place of any meeting held pursuant to this section.