This is a crucial vote - the GOP dare not spit the bit.
Coverage of pre-existing conditions isn't insurance - it's a subsidy, and the question then becomes who pays for it. Under ObamaCare, it's been the unlucky saps trapped in the individual health insurance marketplace, paying far too much for far too little insurance. Under the House bill's approach, those subsidies will be paid for by us all, through general tax revenues - and that's just as it should be.
Centrist Republicans will hopefully come around as they learn more about the fundamental fairness of risk pools for the chronically sick, and how to sell such fundamental fairness to their constituents. They are vulnerable to Democratic demagoguery unlike their Freedom Caucus colleagues in safely conservative districts. But now is the time to do the right thing and demonstrate to the world that the center-right has the ideas and the gumption to govern.