The secretary of state's office says a record 3.3 million voters are now registered in Alabama. Secretary of State John Merrill says more than 584,000 voters have been registered.
Merrill credits the record number of voters to a combination on online registration, a mail-in program and a partnership with the state law enforcement agency.
Alabama doesn't register voters by party, so it's impossible to say whether Republicans or Democrats gained the most potential voters.
This will be the first presidential election using Alabama's new photo identification requirement for voting.
Alabama requires voters to show photo ID such as a driver's license, passport, an Alabama non-driver ID, a university student ID or identification issued by the federal government.