The things that separate him, at least rhetorically, from most of the Republican party are his promise of a huge infrastructure program, and the promise to protect Medicare and Social Security - to protect entitlements. Those are the basis of his definition as a populist within the Republican party. The interesting thing in the next since months is going to be the degree to which he adheres to those policies.

Writer Mark Danner looks beyond Donald Trump's bizarre / revolutionary song and dance campaign act and into his future as a political actor, and explains how Trump's populist infrastructure and entitlement promises will be tested early by a Republican congress.

Mark wrote the piece The Real Trump for New York Review of Books.