Ohio Issue 3 (1975)
From Ballotpedia
Ohio Issue 3 (1975) was a measure regarding delegates to national conventions. This ballot measure was referred to the ballot by the Ohio State Legislature. It passed, with 64.6% of voters in favor.
Text of the proposal
To require delegates to national conventions of political parties to be chosen by the voters in a manner provided by law (Art. V, Sec. 7)[1]

