Know Your Rights: State Laws on Employee Time Off to Vote
http://www.aflcio.org/Blog/In-The-States/Know-Your-Rights-State-Laws-on-Employee-Time-Off-to-Vote
Federal law does not require that employers allow their workers time off to vote, but the majority of states have at least some level of protection for employees who want to leave work to engage in their civic duty. The specifics vary by state, but in each state, the rules apply to almost every type of workplace. Employers are required to know what the laws are and to provide adequate accommodations, according to the rules of that state. Nearly all of the states allow employers to refuse time off to vote for those employees who have two or three hours off during the time the polls are open (the number of hours varies by state).
Alabama: Workers are allowed up to one hour off to vote.
Alaska: Time off is required, but no specific limit is listed as long as the time available is "sufficient" time to vote.
Arizona: Time off is required, but no specific limit is listed as long as the time available is "sufficient" time to vote.
FULL list at link.