So the exact process seems to vary by state, but it generally boils down to:
some for of verification and registration for the year (my state requires this yearly and you are expected to initiate this as it does not happen automatically)
get an email or physical mail ballot (not all states allow email from what I gather)
fill out the ballot, various other forms, and send them to the state via physical mail
So the exact process seems to vary by state, but it generally boils down to:
Makes sense