According to the Montana Secretary of State, you must return your ballot to the county election office by NOON THE DAY BEFORE THE ELECTION. If a PO Box is listed, please use the phone number to call and ask for the address. Details on the location, email address, and phone number for the auditor office in Sheridan County is as follows:
- 100 W Laurel Ave, Plentywood MT 59254 (source)
- 8:00 AM – 4:30 PM, Monday – Friday
- Email: record_supt@co.sheridan.mt.us
- Phone: (406) 765-3403