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Businessman Donald Trump
Donald John TrumpTrump administration eyes proposal to block jet engine sales to China: report Trump takes track to open Daytona 500 Brazile 'extremely dismayed' by Bloomberg record MORE on Tuesday targeted Republican presidential rival Marco Rubio
Marco Antonio RubioPeace Corps' sudden decision to leave China stirs blowback Lawmakers raise concerns over Russia's growing influence in Venezuela USDA takes heat as Democrats seek probe into trade aid MORE, suggesting the Florida senator is a "perfect little puppet" to donors.
Trump alluded to a report this week that casino mogul Sheldon Adelson, a top Republican mega-donor, was leaning toward supporting Rubio's 2016 bid.
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"Sheldon Adelson is looking to give big dollars to Rubio because he feels he can mold him into his perfect little puppet. I agree!" Trump tweeted.
Trump labeled Rubio and former Florida Gov. Jeb Bush, another GOP candidate, as "puppets" during a bipartisan convention in New Hampshire on Monday.
The billionaire real estate tycoon has maintained that he would largely self-fund his own White House bid amid an effort to cast a populist tone that he can't be bought.
Trump, 69, has repeatedly gone after Rubio, 44, calling him a "kid" and casting doubt on his handling of personal finances. In turn, Rubio has labeled Trump "touchy and insecure."
Rubio has risen steadily in the polls in recent weeks toward Trump, who has led the crowded Republican presidential field for more than two months.
