In Maine, everyone over the age of 18 who is a Maine resident and a United States citizen can vote. This includes anyone with a felony conviction, those currently incarcerated, are homeless, or have never registered to vote.
Maine also has same day registration. If you are not registered, your address has changed, or you have never voted before, you can update your address or register at the polls. Bring an ID (driver's license, state ID, school ID, passport etc.) and a residency verification (a bill, a government document, lease agreement, etc.).
Make your voice heard. Your vote is important.