One could say he knows he 's an opportunist and willingly projects this image. People of all persuasions can project on him a hope of 'disruption', knowing that

One could say he knows he 's an opportunist and willingly projects this image. People of all persuasions can project on him a hope of 'disruption', knowing that what he says now has little chance to be followed by actions. His (unlikely) win would create an open playing field for all kinds of unconventional choices (given that he doesn't really owe a debt to his own party). In contrast his opponent is way more predictable but also very largely unlikeable.