The backers of a proposed constitutional amendment in Ohio to legalize marijuana will be out looking for signatures. The Ohio Ballot Board ruled they must obtain about 305,500 valid signatures, which is equal to 10% of the total vote for governor. Those signature petitions must include 44 of Ohio’s 88 counties. The amendment proposed for the November ballot would allow possession, and cultivation of marijuana for residents 21 and over. This proposal would leave the medical marijuana program in place for Ohio. And it would protect landlords from marijuana cultivation by tenants. Another phase of the amendment would allow companies to maintain drug free workplaces.