Q: Has any presidential candidate won the general election without winning the Ohio primary?
A: Yes. Richard Nixon did it in 1968, and John Kennedy in 1960. But "favorite son" candidates won the Ohio contest both those years.
After she won in Ohio, Hillary Clinton stated that no candidate had ever been elected president without winning the Ohio primary. I think that may be a misstatement, could you clarify that please?
Ohio Secretary of State. Election Results, Accessed 6 Mar. 2008.
"Past Ohio Primary Results." Politics.Ohio.com, 26 Feb. 2008.
"Clinton’s Claim Leaves Out Kennedy." Associated Press, 5 Mar. 2008.