Since partisanship and ideological purity are increasing - with Republicans becoming more conservative and Democrats becoming more liberal -- a new third party ought to be emerging to represent those of us who are near the center
But in order for any such party to be viable, first-past-the-post must be scrapped and replaced with proportional representation and/or RCV.
Somebody could come along and pull a Perot, no? If people grow sick of the extremism, it’s entirely feasible that a viable centrist 3rd party arises imo.
That is how the Republican (Free Soil) Party came into existence in the 1850's.