Dan McLaughlin writing for National Review says no (his piece is about what fronts Congressional Republicans should oppose Trump).

But for all of Trump’s authoritarian instincts, he’s not Hitler. Hitler in 1933 was 44, a political fanatic and hardened combat veteran of World War I with a decade’s experience leading a violent street movement full of his fellow veterans. Trump is 70, a political dilettante who’s addicted to cable TV, has spent most of his life making real-estate deals, and commands a political base disproportionately composed of people in their 60s and 70s. Moreover, America is not Weimar Germany, which was then a 15-year-old democracy crumbling amidst hyperinflation, a global Depression, and the loss of a war that killed 13 percent of its military-age men. We have a long history of absorbing and co-opting fringe movements into our remarkably durable two-party system, and that’s exactly what the rest of Republican leadership is trying to do with Trump.