The political system we have known since 1945 is coming to an end. The parties that seemed so permanent in the late 20th century are crumbling almost everywhere. The reason we don’t see it in the United States is because of the primaries system, which forces the existing parties to absorb new currents rather than be washed away by them.

But both the protectionist Republicans and the identitarian Democrats are, for all intents and purposes, different parties now.