The Ohio Mechanics' and Builders' Liens Amendment was a constitutional convention-referred constitutional amendment on the September 3, 1912 special election ballot in Ohio, where it was approved.
| Ohio Amendment 9 (September 1912)|
| Yes|| 278,582|| 53.47%|
Official results via: Proceedings and Debates of the Constitutional Convention of the State of Ohio - 1912, P.2112-2113
Text of measure
The language that appeared on the ballot:
|| Article II, Section 33.
Mechanics' and Builders' Liens.