Ohio Const. art. XI, § 9

(A) The supreme court of Ohio shall have exclusive, original jurisdiction in all cases arising under this article.

(B) In the event that any section of this constitution relating to redistricting, any general assembly district plan made by the Ohio redistricting commission, or any district is determined to be invalid by an unappealed final order of a court of competent jurisdiction then, notwithstanding any other provisions of this constitution, the commission shall be reconstituted as provided in Section 1 of this article, convene, and ascertain and determine a general assembly district plan 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 time for redistricting under this article in conformity with such provisions of this constitution as are then valid.

(C) Notwithstanding any provision of this constitution or any law regarding the residence of senators and representatives, a general assembly district plan made pursuant to this section shall allow thirty days for persons to change residence in order to be eligible for election.

(D)(1) No court shall order, in any circumstance, the implementation or enforcement of any general assembly district plan that has not been approved by the commission in the manner prescribed by this article.

(2) No court shall order the commission to adopt a particular general assembly district plan or to draw a particular district.

(3) If the supreme court of Ohio determines that a general assembly district plan adopted by the commission does not comply with the requirements of Section 2, 3, 4, 5, or 7 of this article, the available remedies shall be as follows:

(a) If the court finds that the plan contains one or more isolated violations of those requirements, the court shall order the commission to amend the plan to correct the violation.

(b) If the court finds that it is necessary to amend not fewer than six house of representatives districts to correct violations of those requirements, to amend not fewer than two senate districts to correct violations of those requirements, or both, the court shall declare the plan invalid and shall order the commission to adopt a new general assembly district plan in accordance with this article.

(c) If, in considering a plan adopted under division (C) of Section 8 of this article, the court determines that both of the following are true, the court shall order the commission to adopt a new general assembly district plan in accordance with this article:

(i) The plan significantly violates those requirements in a manner that materially affects the ability of the plan to contain districts whose voters favor political parties in an overall proportion that corresponds closely to the statewide political party preferences of the voters of Ohio, as described in division (B) of Section 6 of this article.

(ii) The statewide proportion of districts in the plan whose voters, based on statewide state and federal partisan general election results during the last ten years, favor each political party does not correspond closely to the statewide preferences of the voters of Ohio.