BOISE, Idaho (AP) — An organization that aims to get a medical marijuana initiative on the Idaho ballot says it’s turned in enough signatures to the Secretary of State to start the process.

Russ Belville with the Idaho Cannabis Coalition made the announcement Tuesday. Belville’s father, 77-year-old John Belville, is the chief petitioner in the effort. The elder Belville says he has severe pain from a condition called peripheral neuropathy, and the opiates prescribed by his doctor are causing his organs to fail. He says medical marijuana would be a safer treatment for his condition.

After officials with the Secretary of State and Attorney General’s offices review the petition, Idaho Cannabis Coalition will begin the process of collecting signatures from across the state.

To get the initiative on the ballot, the group must collect more than 55,000 valid signatures of registered voters from at least 18 of Idaho’s 35 legislative districts.