… We’ve seen presidents triangulate before –alienating parts of their own coalition to attract a coalition of more moderate members of the other party. See, Bill Clinton post-1994. But, this is different. Trump has no desire to expand his coalition to include Democrats. This is a zero-sum game for him. He’s not trying to triangulate to gain legislative power. He’s attacking Congress to protect himself and his brand – at the likely expense of his own party. This sets up very dangerous cross currents for Republicans to navigate in 2018. CONT.
Amy Walter, Cook Political Report