After Mitt Romney lost in 2012, the Republican Party establishment decided it needed to expand its base and wrote a report to this effect. The plan was for the party to triangulate to some degree on immigration and social issues to win more votes from Hispanics and women, moderating its positions and principles to make itself more attractive to these demographic groups. As Jeb Bush flamed out, Marco Rubio became the poster boy of this new style of conservative politics. But the Republican anti-establishment never bought into this strategy. Led by Ted Cruz, they firmly believed that Romney lost because he failed to excite the Republican base and that the answer was for the party to nominate a “true conservative”. The 2016 Republican primary was all set to be a showdown between “reform conservatism” and the Cruz counterrevolution, but then Donald Trump showed up and made the whole thing about him and about the public’s growing economic frustration. It now looks increasingly likely (but far from certain) that Trump will lose by a significant margin. What effect will that have on this debate and the party’s prospects in 2020?