The deadline to register to vote in the Primary Election on May 21 is Monday, April 22. To be eligible to vote, Kentuckians must be a US citizen, Kentucky resident, at least 18 by the time of the general election, not be a convicted felon, not have been judged mentally incompetent, and not claim the right to vote anywhere outside Kentucky. To register to vote or update registration, visit GoVoteKY.com.