Residents across the state will head to the polls on Tuesday to case their votes in the Republican primary runoff election between incumbent Sen. Luther Strange and challenger Roy Moore.
Former Gov. Robert Bentley appointed Strange to the U.S. Senate earlier this year after former Sen. Jeff Sessions moved into his current position as U.S. Attorney General.
Moore resigned from his position as chief justice of the Alabama Supreme Court to run for the Senate seat. He had already been effectively removed from his position because he was suspended last September by the Alabama Court of the Judiciary for the remainder of his term.
Moore gained more votes than Strange during the regular Republican primary in August, receiving about 39 percent of the vote to Strange's 33 percent.
The race to be the Republican candidate has drawn national attention, and is painted as a battle between establishment and religious candidates.
Strange has received the endorsement of a wide array of politicians, including President Donald Trump, U.S. Senate Majority Leader Sen. Mitch McConnell, Sen. Richard Shelby and the National Rifle Association, among others.
The race is even bringing Trump to Huntsville on Friday for a rally in support of Strange.
Moore picked up an endorsement from another GOP primary opponent, Rep. Mo Brooks, who received nearly 20 percent of the votes in August. Former Arkansas Gov. Mike Huckabee also has voiced his support for Moore.
Polls leading up to the election mostly show Moore with a solid lead in the race, although a recent poll by JMC Analytics showed the race narrowing somewhat, with Moore only holding an eight-point lead.
The winner of the runoff will face Democratic candidate Doug Jones, a former U.S. attorney, in a special election on Dec. 12.
Only voters who cast a ballot in the Republican primary or didn't vote in either primary are eligible to vote in Republican runoff election because of legislation passed this year by the Alabama Legislature that created new crossover voting rules.
Voters who cast a ballot in the Democratic primary will not be allowed to vote in the Republican runoff.
Polling places in Auburn will open at 7 a.m. Tuesday and close at 7 p.m.
Voters will also need to bring a valid photo ID to the poll. The following forms of ID are accepted: valid driver's license; valid non-driver ID; valid Alabama photo voter ID; valid state-issued ID (Alabama or any other state); valid federal-issued ID; valid U.S. passport; valid employee ID from the federal government, state of Alabama, county government, municipality, board, authority, or any other entity of the state; valid student or employee ID from a college or university in the state of Alabama; valid military ID; or valid tribal ID.
Voters who do not possess a valid photo ID will be allowed to cast a provisional ballot.