I mean, plurality-winner voting in the primary process is quite literally what gave us Trump in the first place, because all the more qualified candidates split the vote until Trump started to look presumptive. The current primary processes are utterly pathological.
Yes, but that’s an artifact of the GOP’s favored winner takes all system. Compare to the Dems in 2008, where two candidates with near equal popularity were locked into a drawn out slugfest because proportional representation meant nobody’s wins were decisive.
It still breaks down and doesn’t work well if you have more than two viable candidates. Then it turns into horse trading at the convention, not a reflection of the will of the electorate.