Rupert Murdoch, executive co-chairman of Fox News' parent company, wrote on Twitter that both "'establishment' Republicans" and Republican presidential front-runner Donald Trump “need to cool it and close ranks to fight [the] real enemy,” an apparent reference to the eventual Democratic presidential nominee. Murdoch also wrote that “Trump, Rubio, Kasich could all win [the] general” election. 

In January, Murdoch took to Twitter to laud Trump's “winning strategy” of “appealing across party lines.”

Murdoch's February 28 tweet:

Both “establishment” Republicans and Trump need to cool it and close ranks to fight real enemy. Trump, Rubio, Kasich could all win general.

-- Rupert Murdoch (@rupertmurdoch) February 28, 2016