The Flathead Nation Tribal Council general election is Saturday, December 18, from 8 a.m. to 8 p.m. Eligible voters can cast their votes a several polling locations throughout the Flathead Reservation …The Flathead Nation Tribal Council general election is Saturday, December 18, from 8 a.m. to 8 p.m. Eligible voters can cast their votes a several polling locations throughout the Flathead Reservation …