Prediction Edge
Democrat
Don Leonard

Don Leonard

Democratic candidate for U.S. House in Ohio

Live Odds

Current prediction-market probability for the candidate, updated as market prices change.

Don Leonard is trading at 17% to win the OH-15 House winner? on prediction markets.

Candidate Overview

Key details about the candidate’s background, party, office sought and current campaign.

Current roleProfessor (city and regional planning)

PartyDemocratic

Political ideologyProgressive Democrat

LocationOhio

BackgroundProfessor (city and regional planning)

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EducationCornell University — PhD, Government (2014)

Notable personal detailsDon Ralph Leonard is a Democratic candidate for the U.S. House in Ohio’s 15th Congressional District in the 2026 election cycle. He has worked as a Professional Practice Assistant Professor in City and Regional Planning at The Ohio State University. Leonard previously held postdoctoral fellowships at Tulane University and Princeton University and earned graduate degrees in government from Cornell University. He also served in the U.S. Peace Corps in South America.

SourcesShow

Political Positions

LiberalConservative

Economy & Taxes

Supports restoring economic fairness by strengthening safety nets and opposing tax breaks and bailouts for corporations and billionaires while prioritizing policies that help working families. Emphasizes bold national action on healthcare, housing, childcare, and aging as central to fixing the economy.

Healthcare

The candidate supports that all Americans deserve quality, affordable insurance and emphasizes strengthening healthcare access. His campaign materials state a focus on affordable, usable insurance rather than proposing full privatization or single-payer replacement.

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Immigration & Border

Supports accountability for aggressive immigration enforcement and criticizes federal agents’ conduct; frames immigration as an issue tied to humane treatment and reform rather than enforcement-first approaches. Emphasizes protecting legal residents from abusive enforcement actions while discussing immigration and ICE accountability as part of his platform.

Latest News

AINews Summary
Last updatedJul 29, 2026

Don Leonard is being mentioned in the context of Democrats expanding their 2026 target list for House races. The DCCC has added more Republican-held districts to its map as it looks to capitalize on voter frustration over the economy. The summary does not provide any specific new action or statement from Leonard himself.

docquery.fec.gov+56

Latest Polls

OH-15 House winner?

Recent polling results and the candidate's current average in the race.

Don Leonard currently averages 37.7%, ranking second in this race, 4.0 points behind the next candidate.

Polling average: 37.7%Position: secondMargin: -4.0 ptsLatest poll: 37.0% (Aug 6 - 9)Polls included: 3

Average recalculated from polls through Aug 6 - 9.

Polling Average
50%40%30%20%10%0%
37.7%
41.7%
Don Leonard
D. Leonard
Mike Carey
M. Carey
Date (Start - End)SpreadLeonardCarey
Polling Average
Carey+4.0
37.7%41.7%
Hart Research AssociatesAug 6 - 9
Carey+4.0
37.0%41.0%
Hart Research AssociatesJun 23 - 25
Carey+5.0
40.0%45.0%
Tavern ResearchMay 16 - 21
Carey+3.0
36.0%39.0%

Aggregation source: FiftyPlusOne

Endorsements

6
OH-15 Democratic nominee?

Campaign Fundraising

Latest report: Cycle 2026

Campaign finance totals from the latest available reporting period.

Total raisedCash on hand
$606.7K
$455.0K
$303.3K
$151.7K
$0

2026

Latest
Year
Total raised
Cash on hand
Total spent
Burn rate

Cycle 2026

$606.7K
$252.4K
$354.3K
$19.7K

Source: FEC