Ohio
A dated list of changes to how Americans vote: district maps, polling places and drop boxes, voting laws and rules, and courts and election officials. Each entry says who did what and when, shows what became of it, and links to the page it rests on. Attempts that failed are listed as failed. Entries that rest on a news report name the outlet.
This is the state view: events recorded for Ohio, then national events that apply here. See the national timeline.
In Ohio
2018
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Ohio voters approve Article XIX, a new process for drawing congressional districts
In 2018 the General Assembly passed Sub.S.J.R. No. 5 to amend the Ohio Constitution and enact Article XIX, which sets a process and standards for congressional redistricting. The Ohio Supreme Court recorded that the 2018 ballot language told voters the amendment would require the General Assembly or the Ohio Redistricting Commission to adopt new districts by a bipartisan vote for the plan to last the full 10-year period, and that Ohio voters adopted Article XIX in 2018.
Source last checked Oct 20, 2026
2015
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Ohio voters amend the constitution to change how state legislative districts are drawn
The Ohio Supreme Court wrote in 2022 that "Ohio voters overwhelmingly voted to impose constraints on the government's ability to draw districts based on partisan gerrymandering, amending Article XI of the Ohio Constitution in 2015 for the drawing of state legislative districts." Article XI governs the Ohio Redistricting Commission.
- Adams v. DeWine, 2022-Ohio-89 (Ohio, January 14, 2022) ↗
- League of Women Voters of Ohio v. Ohio Redistricting Commission, 2022-Ohio-342 ↗
Source last checked Oct 20, 2026
Nationwide
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How this timeline is built
Every entry rests on at least one source that was opened and read, and that source states the date and the fact. Courts, legislatures, election offices, the Justice Department, the Census Bureau, the Federal Register and Congress.gov come first. A news report is used only when no official page states the fact, and it is labeled with the outlet's name. Encyclopedias are not used as sources. History starts in 1965 with the Voting Rights Act. County names come from the Census Bureau's 2024 Gazetteer. Congressional district numbers are those in use for the 2026 election; an event is tagged to a district only when its source names that congressional district.
When a later event changes an earlier one, such as a law later struck down, both entries are listed and point to each other. This page does not predict outcomes or say which party a change helps. U.S. House maps for 2026 · How people voted in past elections, by county · Back to the 2026 voting center.