Trumpism isn’t the kind of force in 2016 that the Tea Party was in 2010. The next Congress won’t be full of Republicans who ran on Trump’s signature ideas or have any particular investment in them.
And not one of those ideas — his extreme brand of protectionism, his call to re-examine military alliances, his threat of mass deportations — shows any sign of becoming Republican dogma the way that supply-side economics did in the wake of Ronald Reagan’s evangelism for it. There’s less evidence of Republicans’ moving en masse toward Trump’s platform than of Trump himself retreating from it, as he did on immigration last week.
By Election Day, there may not even be Trumpism with Trump.