A sure fire way to raise voter turnout would be to first make make voting day a national holiday! People don’t forget holidays. Along with that same day registration would get a lot of procrastinators to vote.
Ballots should also be mailed to every registered voter, regardless if they are supposed to go to a polling place to vote. Mail-in works and all Americans should have that option.
If a person doesn’t have a drivers license, a state-issued identification card should be free, and a copy of a birth certificate should cost no more than $5, free if you are indigent.