MONTGOMERY, Ala. (AP) — The Latest on Alabama's special primary election for the U.S. Senate seat vacated by Attorney General Jeff Sessions (all times local):

7:25 p.m.

Voting is coming to a close in the Alabama Senate primary.

Voters went to the polls Tuesday to select party nominees for the U.S. Senate seat that previously belonged to Attorney General Jeff Sessions. Polls were scheduled to close at 7 p.m.

Republican Sen. Luther Strange, who was appointed to fill the post temporarily, is seeking to fight off challengers that include former Alabama Chief Justice Roy Moore and U.S. Rep. Mo Brooks.

Democratic contenders include former U.S. Attorney Doug Jones, environmentalist Michael Hansen and Navy veteran Robert Kennedy Jr.

The primaries will go to a September runoff unless a candidate gets more than 50 percent of Tuesday's vote.

The winning Democrat and Republican will face off in a general election in December.

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12:45 p.m.

Turnout could be even lower than expected in Alabama's Senate primary.

Alabama Secretary of State John Merrill said Tuesday afternoon that turnout could be as low as 10 percent to 15 percent if the trend continues.

Polling places across the state reported light traffic in the morning. Merrill originally projected turnout at between 20 and 25 percent, significantly lower than the 30 percent seen in a typical primary election.

Voters are selecting party nominees for the U.S. Senate seat previously held by Attorney General Jeff Sessions.

The primaries will go to a September runoff unless a candidate gets more than 50 percent of Tuesday's vote.

The winning Democrat and Republican will face off in a general election in December.

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11:45 a.m.

Former Alabama Chief Justice and Republican Senate candidate Roy Moore rode a horse to the polls as he voted in the state's special Senate primary on Tuesday.

Moore wore a black T-shirt saying "military police" and a black cowboy hat as he dismounted at the Gallant Volunteer Fire Department, where he votes in northeastern Alabama.

Moore jokingly looked shocked when a poll worker asked if he wanted to vote in the GOP or Democratic primary.

He then took only a few seconds to mark his ballot -- presumably for himself. Moore says it's odd to have only one race on a statewide ballot.

Moore is among a group of candidates for the seat previously held by Attorney General Jeff Sessions. He says riding a horse to vote is a family tradition.

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7:30 a.m.

Polls have opened across Alabama as voters cast ballots in party primary elections for the U.S. Senate seat previously held by Attorney General Jeff Sessions.

Republican Sen. Luther Strange, who was appointed to fill the post temporarily, is seeking to fight off challengers that include former Alabama Chief Justice Roy Moore and U.S. Rep. Mo Brooks.

President Donald Trump has endorsed Strange and recorded automatic phone calls on his behalf.

Brooks has criticized Strange's backing by a super political action committee tied to Senate Majority Leader Mitch McConnell.

Democratic contenders include former U.S. attorney Doug Jones, environmentalist Michael Hansen and Navy veteran Robert Kennedy, Jr.

The primaries will go to a runoff unless a candidate gets more than 50 percent of the vote Tuesday.

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4:45 a.m.

Alabama voters will be casting ballots Tuesday in party primaries for the U.S. Senate seat previously held by Attorney General Jeff Sessions.

Voting begins at 7 a.m.

Republican Sen. Luther Strange, who was appointed to fill the post temporarily, is seeking to fight off challengers that include former Alabama Chief Justice Roy Moore and U.S. Rep. Mo Brooks.

President Donald Trump has endorsed Strange and recorded automatic phone calls on his behalf.

Brooks has criticized Strange's backing by a super political action committee tied to Senate Majority Leader Mitch McConnell.

Democratic contenders include a former U.S. attorney Doug Jones, environmentalist Michael Hansen and navy veteran Robert Kennedy, Jr.