President Trump on Wednesday touted "additional support" for Sen. Luther Strange (R-Ala.) following his endorsement in Alabama's special Senate election, despite Strange coming in second place in the GOP primary the night before.

Wow, Senator Luther Strange picked up a lot of additional support since my endorsement. Now in September runoff. Strong on Wall & Crime! — Donald J. Trump (@realDonaldTrump) August 16, 2017

Strange, who was appointed to the Senate seat vacated by Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE, finished behind former Alabama Supreme Court Chief Justice Roy Moore in the Republican primary on Tuesday.

Strange's campaign and allies leaned heavily on the Trump endorsement in the final days, pushing back against claims that Strange serves as a tool of the Washington establishment and Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.).

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Trump recorded a robocall for Strange one day before the primary, even as Moore and Alabama Rep. Mo Brooks Morris (Mo) Jackson BrooksOvernight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals,' official says MORE (R) both tried to paint themselves as the most pro-Trump candidate.

Moore won among primary voters, projected to beat Strange by 9 points, 41 percent to 32 percent.

Trump also congratulated them both earlier Wednesday morning.

Since neither of the two GOP candidates received more than 50 percent support, they are set to move on to a runoff election in late September, before the general election in December.

In February, then-Alabama Gov. Robert Bentley (R) appointed Strange to the seat after Sessions was confirmed to his top Justice Department position. McConnell and the National Republican Senatorial Committee are treating him as the incumbent.

“Senator Luther Strange has done a great job representing the people of the Great State of Alabama. He has my complete and total endorsement!” Trump tweeted last week.