Rubio wins DC caucus

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 has been projected the winner of the Washington, D.C., Republican caucus Saturday. 

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The Florida senator beat out Ohio Gov. John Kasich by just 50 votes, according to The New York Times, ultimately winning 37 percent of the vote. 

Kasich followed with 35 percent. Donald TrumpDonald TrumpTrump: Muslim soldier was a hero but his father 'has no right' to criticize me Mother of soldier killed in Iraq: I was too 'in pain' to speak at convention Top Koch network adviser rejects Trump's talk of law and order MORE and Texas Sen. Ted CruzTed CruzHot air balloon crash kills 16 in Texas 100 days to go in volatile race Voting Trump because of the Supreme Court isn't enough MORE trailed with 14 and 12 percent of the vote, respectively.

D.C. is a small victory for Rubio, who has struggled in primary contests; his lone win was in Minnesota. 

D.C. has 19 delegates. Rubio will take 10 and Kasich will take nine. Cruz and Trump didn't win any delegates, which could bolster their anti-Washington talking points. 

Rubio and Kasich will both make what could be their last stands on Tuesday in their home states of Florida and Ohio, hoping the winner-take-all contests will help halt Trump's trajectory toward the nomination. 

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