Ohio is a deeply gerrymandered swing state in which down-ballot offices play a role in the redistricting process. In the 2018 election Ohioans gained many seats in the Ohio state House.


How Redistricting Happened in Ohio

The following timeline is a high-level overview outlining major redistricting events and activity in the state of Ohio over the last 10 years.


Republicans won trifecta control of the state, meaning that Republicans controlled the governorship and both chambers of the state legislature.


Census data delivered to Ohio.

Republican-controlled legislature drew the congressional map.

Republican Governor John Kasich signed maps into law.

Politician-led redistricting commission approved legislative maps that were challenged in litigation, but ultimately upheld.


President Barack Obama wins Ohio with 51% of the vote and Senator Sherrod Brown wins re-election by 5 points, but gerrymandering helped provide Republicans 75% of the congressional delegation, 61% of the state House and 70% of the state Senate.


A citizen-led reform effort brought Republican state legislators to the table. The parties involved came to an agreement to reform how congressional maps are drawn, sending the compromise to the ballot.

On May 8, 75% of Ohioans voted for the citizen-led bipartisan compromise to make Ohio’s redistricting process less partisan in 2021. And in 2018, Democrats gained seats in both the state House, and a seat in the state Supreme Court.

Know the Races that Impact Redistricting

1 Know the Decision Makers

Congressional redistricting is controlled by the state legislature and the governor.  Legislative redistricting is controlled by a 7-member bipartisan commission, including three elected officials. The three elected officials are:

  • Governor
  • Secretary of State
  • State Auditor

2 Know Your State Legislature

Ohio Lower Chamber




1 Vacant seats

Ohio Upper Chamber




3 Register to Vote

Register to vote in Ohio

You can also confirm that you are already registered to vote.

4 Vote

Court Cases Impacting Ohio

On May 23, 2018, the Ohio A. Philip Randolph Institute and other plaintiffs filed a complaint to challenge the Ohio’s congressional districts. Ohio A. Philip Randolph Institute v. Kasich is an active court case.

Ohio A. Philip Randolph Institute v. Kasich

Read the complaint here.

Get Involved in Ohio Today

The fight to fix gerrymandering is right now—and we need your help in Ohio! Here’s what you can do:

Join Organizing for ‘18

The National Democratic Redistricting Committee and Organizing for Action (OFA) launched a partnership to build a more fair democracy by strategically targeting legislative chambers, governorships, and ballot initiatives that will be critical in determining how maps are drawn after the 2020 Census.

Join a Local OFA Chapter

Alongside the National Redistricting Action Fund (an NDRC affiliate), OFA is engaging with activists and volunteers to help educate people about gerrymandering and involve them in the process of fixing a badly rigged political system.

Attend Events Near You

The National Democratic Redistricting Committee and MobilizeAmerica have teamed up to bring you the highest-impact volunteer opportunities in Ohio to help elect Democrats up and down the ticket — and bring an end to Republican gerrymandering.

You can register to vote for the general election in Ohio up until .

to Vote