The registration process can be a little daunting. When you're of legal age, you become eligible to vote in national and local elections. Voters must be U.S. citizens and 18 years of age.
USA.gov states that the following places may offer voting registration:
http://www.usa.gov/Citizen/Topics/Voting/Register.shtml
USA.gov also states that Kentucky requires registration 29 days before the election.