But when York asked if he would definitively rule out running as a third-party candidate, Trump said, "It's not something I'm thinking about right now." And as John Fund pointed out in National Review, it is something Trump has thought about in the past.
He made a feint at getting Ross Perot's Reform Party nomination back in 1999. And while Trump recently called Clinton "the worst secretary of state in the history of our nation," somehow overlooking James Buchanan's feckless stint in the Polk administration, he also contributed to her Senate campaigns and has called her "a terrific woman."
The fact is that Trump, as a national celebrity and a non-politician often at odds with both parties, has the capacity to launch an independent candidacy scoring double digits in polls, just as Perot did in 1992 and Colin Powell could have done in 1995.