Kansas Gov. Sam Brownback endorses Rubio
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Kansas Governor Sam Brownback (R) on Monday endorsed Marco RubioMarco Antonio RubioOvernight Cybersecurity: What we learned from Carter Page's House Intel testimony | House to mark up foreign intel reform law | FBI can't access Texas shooter's phone | Sessions to testify at hearing amid Russia scrutiny Cornyn: Senate GOP tax plan to be released Thursday This week: GOP seeks to advance tax overhaul MORE’s presidential campaign.

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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 Diane Rodham ClintonGOP rushes to cut ties to Moore Papadopoulos was in regular contact with Stephen Miller, helped edit Trump speech: report Bannon jokes Clinton got her ‘ass kicked’ in 2016 election MORE or Bernie SandersBernard (Bernie) SandersWorld leaders reach agreement on trade deal without United States: report Sanders on Brazile revelations: DNC needs ‘far more transparency’ Sen. Warren sold out the DNC 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 John TrumpDems win from coast to coast Falwell after Gillespie loss: 'DC should annex' Northern Virginia Dems see gains in Virginia's House of Delegates MORE and Ted CruzRafael (Ted) Edward CruzOvernight Finance: GOP criticism of tax bill grows, but few no votes | Highlights from day two of markup | House votes to overturn joint-employer rule | Senate panel approves North Korean banking sanctions GOP criticism of tax bill grows, but few ready to vote against it Anti-gay marriage county clerk Kim Davis to seek reelection in Kentucky MORE.