Roy Moore has a nearly 20-point lead over Sen. Luther Strange (R-Ala.), the candidate backed by President Trump and Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellOcasio-Cortez to voters: Tell McConnell 'he is playing with fire' with Ginsburg's seat McConnell locks down key GOP votes in Supreme Court fight Video shows NYC subway station renamed after Ruth Bader Ginsburg MORE (R-Ky.) in Alabama's Senate special election, according to a new poll.

The survey conducted by JMC Analytics and Polling found the former chief justice of Alabama's Supreme Court with 51 percent support, compared to 32 percent for Strange.

The two will face one another in a runoff election to be the GOP nominee on Sept. 26.

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Moore won the first battle of the primary on Tuesday, taking 39 percent to Strange's 31 percent. 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-Ala.) fell out of the contest, taking 19 percent of the vote.

Whoever wins the GOP nomination will be the favorite in the general election to succeed Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE, the GOP senator who gave up his seat to serve as Trump's attorney general. Strange was appointed to fill the seat until the election.

Still, Moore's win would give Democrats a ray of hope that they could contend for the seat.

And if Moore is elected, it would give McConnell a difficult new senator to contend with in Washington.

Trump's endorsement did little to help Strange, according to the JMC Analytics poll.

Twenty-five percent of respondents said Trump's backing made them more likely to support Strange, while 23 percent said it made them less likely to. Fifty-one percent were unmoved by the endorsement.

The survey was conducted from Aug. 17-19 and recorded 515 complete responses from registered voters in Alabama. The margin of error is 4.3 percent.