Candidates Declared • Casey Putsch, automotive entrepreneur • Running mate: Kim Georgeton,
Warren County central committee member •
Vivek Ramaswamy, founder of
Roivant Sciences and
candidate for president in
2024 • Running mate:
Rob McColley,
president of the Ohio Senate (2025–present) from the
1st district (2017–present)
Disqualified • Renea Turner • Running mate: Jalen Turner • Heather Hill, business owner, and former president of the
Morgan County School Board • Running mate: Stuart Moats, business owner and reality TV star
Withdrawn • Matt Mayer, former director of the
Buckeye Institute •
Robert Sprague,
Ohio state treasurer (2019–present)
(endorsed Ramaswamy, running for secretary of state) •
Dave Yost,
Ohio attorney general (2019–present) and former
Ohio state auditor (2011–2019)
Declined •
Warren Davidson,
U.S. representative from
Ohio's 8th congressional district (2016–present)
(endorsed Ramaswamy,, running for re-election) •
Jon Husted,
U.S. senator (2025–present), former
lieutenant governor (2019–2025), and candidate for governor in
2018 (
endorsed Ramaswamy, running for U.S. Senate) •
Frank LaRose,
Ohio secretary of state (2019–present) and candidate for U.S. Senate in
2024 (endorsed Ramaswamy, running for state auditor) •
Jim Tressel,
lieutenant governor of Ohio (2025–present)
Endorsements Polling Results ==Democratic primary==