On Sunday night Murdoch put out word, through his personal Twitter account, that "it's time" for Bloomberg, a fellow mogul who completed a third term as New York City mayor in 2013 and now runs Bloomberg LP, the financial data and media firm he founded decades ago. The tweets were intriguing not just because Murdoch seemed to be publicly drafting Bloomberg, but because Murdoch was sharply critical of GOP frontrunner Donald Trump earlier this summer.