The reason Trump got elected in the first place is because they rigged the primary for a Wall Street puppet that he could easily beat, loyalty pledges didn't work in 2016, nor will they in 2020! If they want to beat Trump they need to nominate a candidates that addresses the issues people care about, not Wall Street! Pledges to support the nominee in a rigged system, without even mentioning Ranked Choice Voting, won't beat Trump, but they will defend the Duopoly!