← Atlas index
Ohio (rank #7 of 50 by population)
Data snapshot: 2026-03-27 · Population ~11.9M
1. Key organs of government
States typically divide power into executive (governor and agencies), legislative (bicameral legislature except Nebraska), and judicial (courts of last resort and lower courts). Below: statewide elected executive, each legislative chamber, and the apex court.
- Executive branch: Governor; Lieutenant Governor; Attorney General; Auditor; Secretary of State; Treasurer; Agriculture Director (appointed)
- Ohio Senate — President of the Senate · 33 seats · Republican majority (~75.8% of seats)
- Ohio House of Representatives — Speaker of the House · 99 seats · Republican majority (~67.7% of seats)
- Supreme Court of Ohio — Chief Justice · 7 seats · Nonpartisan ballot labels; partisan primaries in practice
2. Elected seats & majority strength
| Organ / body | Total seats | Presiding / chief role | Majority party | Approx. majority seats | % of chamber |
| Ohio Senate | 33 | President of the Senate | Republican | 25 | 75.8% |
| Ohio House of Representatives | 99 | Speaker of the House | Republican | 67 | 67.7% |
| Supreme Court of Ohio | 7 | Chief Justice | — (court) | — | — |
Note: Majority figures are approximate snapshots; special elections can change counts. Verify on the state legislature website. Current Speaker / Senate president (or equivalent) names appear on each legislature’s leadership page, not in this static file.
3. Leader of the executive (Governor)
| Office | Governor |
| Current officeholder | Mike DeWine (Republican) |
| Last general election | 2022-11-08 |
| Next general election | 2026-11-03 |
4. Legislative elections (both chambers)
| Last general | 2024-11-05 |
| Next general | 2026-11-03 |
| Note | Legislative elections in November of even years. |
Which seats are on the ballot next?
- Ohio House of Representatives. All 99 seats have 2-year terms. Every seat is on the ballot in November 2026 (and in every general election in even years).
- Ohio Senate. Senators serve staggered 4-year terms (33 seats). With an odd-sized chamber, about half are elected each even-year November (16 one cycle, 17 the next). In November 2026, the complement to the 2024 Senate class is on the ballot; confirm exact count with the Ohio Secretary of State.
5. Critical dates (typical patterns)
- Confirm filing deadlines, primaries, and session calendars on the Secretary of State and legislature sites.
6. Primary sources to verify / update