Buchanan can be described as a Southern populist, as can Pat Choate and Ross Perot, whose populist sentiments appear to have triumphed over their progressive principles.
Buchanan, Choate, and Perot are all famous anti-populists. 
mnli hypothesis: Buchanan, Choate, and Perot are all famous anti-populists.  premise: Buchanan can be described as a Southern populist, as can Pat Choate and Ross Perot, whose populist sentiments appear to have triumphed over their progressive principles.