Kansas Gov. Sam Brownback endorses Rubio

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Kansas Governor Sam Brownback (R) on Monday endorsed Marco RubioMarco RubioFlorida: 'High likelihood' of first Zika transmission in the US Overnight Healthcare: Rubio presses Obama to spend Zika money | FDA moves ahead with trans fat ban The Trail 2016: Her big night MORE’s presidential campaign.

Rubio’s campaign made the announcement in a statement that described Brownback as “one of the most conservative governors in the country” who has been “one of the nation's strongest defenders of the unborn, limited government, and traditional values.”

"Marco Rubio is a true conservative who can unite the party and defeat Hillary ClintonHillary Rodham ClintonCNN: Anchor Wolf Blitzer wasn't celebrating Clinton nomination Clinton, Kaine blast GOP convention Hillary Clinton closes DNC with message of inclusion MORE or Bernie SandersBernie SandersDem anxiety hangs over Clinton Sanders consultants join up with Wasserman Schultz’s primary opponent The Hill's 12:30 Report MORE in the fall," Brownback, a former senator and congressman, said in a statement. "In the past, conservatives have been forced to make a choice between their head and their hearts. This year, we are fortunate to not have to make that choice.”

Brownback said Rubio has a “proven track record of protecting life, defending religious liberty, and undoing Obamacare.”

Rubio is averaging 20 percent support in national polls, behind front-runner Donald TrumpDonald TrumpClinton, Kaine blast GOP convention Clinton to hit Trump over outsourcing on Rust Belt bus tour Dem anxiety hangs over Clinton MORE and Ted CruzTed CruzVoting Trump because of the Supreme Court isn't enough Trump blames GOP as Dems top RNC ratings Dem lawmakers rally Muslims against Trump MORE.

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