Upset Brief · OH-15 · Don Leonard (D) vs. Mike Carey (R), incumbent
Leonard can win. The plan uses 43 percent of what history allows.
15%
odds today
51%
odds with the plan
12,819
net votes to find
Don Leonard won
result of the November 3, 2026 election
Where
- 01+178Cols 86-A (Franklin County)Starting line Leonard +55. 9.9% split their ticket. About 567 more ballots in 2024 than in 2022 (estimate).
- 02+156Hill 4-A (Franklin County)Starting line Leonard +24. 11.3% split their ticket.
- 03+144Dub 3-B (Franklin County)Starting line Leonard +14. 15.6% split their ticket.
- 04+119Dub 3-A (Franklin County)Starting line Leonard +4. 12.1% split their ticket.
- 05+114Hill 4-C (Franklin County)Starting line Leonard +16. 11.1% split their ticket.
- 06+114Dub 4-F (Franklin County)Starting line Leonard +21. 14.2% split their ticket.
The top 12 precincts carry 11% of the plan.
How
- P+11,198Persuade26,156 voters in play: ticket splitters now leaning Carey, plus the 12 percent still undecided in the latest poll.
- M+2,050MobilizeAt least 44,332 people who voted in 2024 but not in 2022, in precincts where Leonard's side wins at least 55 percent.
- C+211ConsolidateVoters who went third party in recent races, in the precincts that lean Leonard's way.
What has to be true
- Leonard wins 21 percent of the ticket splitters and undecided voters now leaning Carey.
- In Cols 86-A (Franklin County) and Cols 45-C (Franklin County), 15 percent of the people who voted in 2024 but skipped 2022 come back and vote.
- No national wave is required. The plan uses 43 percent of what recent Ohio results show is possible.
- The starting line comes from the published 2026 head-to-head polls between these two finalists, sponsored ones included; if the true gap is different, so is the plan.
The numbers behind it
- 01Crossover regression536 precincts, R² 0.993, 74 crossover precincts identified
- 02Monte Carlo20,000 seeded simulated elections with a 5-point baseline error. 90% range of the final margin with the plan: -20,807 to 22,181 votes.
- 03Money, FEC candidate totals through June 30Leonard $252,402 cash on hand; Carey $2,056,713.
- 04Call program for this list23,349 households, 70,047 dials, about 3,670 live conversations: an estimated $8,097 at published rates.
Independent analysis by The Political Group from official Ohio Secretary of State precinct returns (2022 and 2024), FEC filings and published polls, as of September 26, 2026. Not affiliated with any candidate or party.