MONTGOMERY, Ala. — Fewer than 1 in 7 and perhaps as little as 1 in 10 registered voters were expected to cast their ballots Tuesday in Alabama's primary to determine who would vie in December for Attorney General Jeff Sessions' old Senate seat.

After a morning of lackluster turnout at the state's polling places, the Alabama Secretary of State's Office revised its predictions downward from original estimates of 1 in 4 or 1 in 5 voters at the polls.

“Apparently, this is a case where people are not enthusiastic about the candidates,” Secretary of State John Merrill said.

Alabama voters, who haven't selected a Democrat for a U.S. Senate seat since 1992, have nine Republicans to choose from. Seven others are competing to become the Democratic nominee.

► Tuesday: 5 things to watch as Alabama casts votes in Senate primary
► Aug. 3: President Trump's strong-arm tactics backfire in Senate, experts say

Alabama doesn't register voters by party, so a voter can choose either primary.

If none of the candidates wins a majority in each party's primary, state law sends the top two vote-getters to a primary runoff Sept. 26. And political analysts consider that highly likely in at least the GOP race; the special election for the Senate seat is Dec. 12.

“We’re just kind of tired of the political machine,” Carol Wright of Montgomery said about her and her husband's choice of former Alabama Chief Justice Roy Moore. “There’s way too much good ol' boy stuff going on in Washington. We need to drain the swamp.”

Moore was elected to the Alabama Supreme Court in 2001, removed in 2003, re-elected in 2013, suspended in 2016 and resigned in April to run for Senate. He first generated controversy by commissioning a Ten Commandments monument for the Alabama Judicial Building; his second upbraiding occurred because he directed the state's probate judges to continue to enforce Alabama's ban on same-sex marriage after the U.S. Supreme Court ruled in favor of gay marriage.

In a surprise move a week ago, President Trump endorsed Sen. Luther Strange, a Republican whom then-Gov. Robert Bentley appointed when Sessions joined the Trump administration.

Strange is trailing Moore in most public polls: The latest from the Montgomery-based Cygnal polling firm, and L2 voter data had Moore with the approval of 31% of voters surveyed; Strange with 23%; and Rep. Mo Brooks, R-Ala., with 18%. But that was Aug. 8 and 9 before Trump recorded a phone message for Strange.

► Aug. 3: John Kelly called Jeff Sessions to assure him job is safe
► July 27: Trump is ‘waterboarding’ Jeff Sessions, Alabama lawmaker says

"I'm not really a big fan for any of the candidates that were running today. But since President Trump officially endorsed Luther Strange and Luther Strange has publicly said he would back Trump's agenda, that's the reason I voted for Luther Strange," Walt Haywood said after walking out of the Doster Memorial Community Center in Prattville, Ala., about 10 miles northwest of Montgomery.

James Pollock, a retiree who lives in Montgomery, said Trump’s endorsement and that of the National Rifle Association helped him vote for Strange. 

“Trump likes Strange for some reason,” he said. “I voted for Trump. I didn’t want to upset the apple cart.”

► July 26: Could Jeff Sessions still get his old job in the Senate back?
► March 30: Alabama's newest senator faces learning curve in first month in office

Moore’s supporters said they thought he was the most honest candidate in the race or the one who aligned with their religious beliefs.

"Christian values are very important to me," Roger Carter of Prattville said. "But he's also conservative in some of the ways that our president is, and that means a lot to me."

Democrats who came out to vote were critical of Donald Trump and recent corruption scandals that engulfed Alabama. Health care was also on many people's minds.

► March 2: Attorney General Jeff Sessions steps aside from Russia probe
► Feb. 9: Jeff Sessions sworn in as attorney general while Trump signs orders

Zelda Kitt, an educator from the college town of Auburn, Ala., about 50 miles from Montgomery, voted for former U.S. Attorney Doug Jones. She said she liked his views on Medicaid and the Affordable Care Act.

“I do hope Democrats have a chance to make a splash,” said Kelly Kennington, a history professor at Auburn University who voted for environmentalist and progressive candidate Michael Hansen. “I’m not naïve. I don’t necessarily think they’ll win (the general election). But I hope so.” 

Follow Kym Klass and Brian Lyman on Twitter: @kymklass and @lyman_brian