In his previous campaign, Zachary Haines received a broad range of federal, state, and local endorsements:

Rob Portman, United States SenatorZachary Haines and Senator Rob Portman

Rand Paul, United States Senator

Steve Chabot, United States Congressman

Brad Wenstrup, United States Congressman

Hamilton County Republican Party

Warren County Republican Party

Cincinnati Right to Life PAC

Citizens for Community Values PAC

Shannon Jones, State SenatorRand Paul

Bill Seitz, State Senator

Ron Maag, State Representative

Lou Terhar, State Representative

Lou Blessing, State Representative

Tom Brinkman, State Representative

Paul Zeltwanger, State Representative

Jonathan Dever, State Representative

Joe Deters, Hamilton County ProsecutorZachary Haines and Congressman Steve Chabot

Chris Monzel, Hamilton County Commissioner

Greg Hartmann, Hamilton County Commissioner

Pat South, Warren County Commissioner

Tom Ariss, Warren County Commissioner (former)

Matt Nolan, Warren County Auditor

Linda Oda, Warren County Recorder

Peter Stautberg, State Representative (former)

Amy Murray, Cincinnati City Council

City of Norwood Republican Club

Ohioans for Educational Freedom PAC