Peter Thiel, the Silicon Valley billionaire and outspoken Donald Trump supporter, is considering a 2018 bid for California governor, according to three Republicans familiar with his thinking. Thiel, who co-founded PayPal and was an early investor in Facebook, has been discussing a prospective bid with a small circle of advisers, including Rob Morrow, who has emerged as his political consigliere. Morrow has worked at Clarium Capital, the San Francisco-based investment management firm and hedge fund that Thiel started. Those who have been in t