Today, Americans are eligible to vote if they are at least 18 years old, US citizens, state residents, and--in 48 states--not currently in prison or on parole for a felony. In 49 states, eligible voters must register to vote. North Dakota is the only state that does not require this. The exact rules for how and when to register vary by state. Some states offer same-day registration, but many have registration deadlines ahead of Election Day. Some states have voter ID laws. These require voters to have official identification to register, receive a ballot or vote. If you're eligible to vote or will be soon, be sure you know how and when to register and what you'll need to vote in your state. Which of these is governed by federal and not state law? A registration deadlines B voter ID requirements C minimum voting age D the registration process