In some states, voter registration deadlines have already passed, but nearly half the states allow same-day registration on Election Day for those who still want to register and vote.

Election Day voting is unfolding largely smoothly across the nation _ with only scattered reports of delays from extreme weather, ballot printing errors and technical problems

California offers same-day voter registration, also known as conditional voter registration, as a way to help ensure all eligible voters have the opportunity to cast a vote on Election Day — even if they missed the Oct. 21 deadline. On Election Day, you can register to vote at your county elections office, any polling place or a vote center.