Registration Information for Wyoming
Voter registration can be completed via mail, post office, or online. Physical voting locations are open from 7:00 am until 7:00 pm on election days. If registered voters cannot vote on election days, they can do so within a 40 day "early voting" period in a county election office. To register to vote, you must be a USA citizen, be 18 or older effectively, and reside within Wyoming. In terms of documentation for registration, you need the last four numbers of your SSN, or your Driver's License Number, or your Wyoming State ID. Voter ID is a requirement in order to cast your vote in person; which can consist of either a government issued document that contains your name and adress, or your government issued photo ID. You cannot vote in Wyoming if you have been judged as "mentally incompetent" by a court, are a registered voter in another state, or are on parole for a felony.
What else you need to know
First-time voters in Wyoming may be asked to present valid identification at the polls, but photo ID is not necessary.