I saw a tweet series from the guy who ran multiple campaigns against David Duke that said explicitly the opposite. (Might be the same in the OP, if so apologies, I can't see the link for some reason). Basically, the key was not to normalize him by debating policy with him or criticizing his policy failures or other petty personal stuff. His supporters are locked in. They don't give a $%^ about your healthcare policy or your infrastructure plan. Even the ones who might know they got taken the first time won't admit it and will vote for him again. The few who do realize it don't need to be persuaded. They've probably already switched sides. The answer is to get people off the sideline who didn't vote last time. This is also not done with policy wonk. It is done by making the election about getting the racist out of the White House. About who we are as a country and who we want to be. Not saying this take is right. But I can't really argue with it. I would say this: Make the primary about policy. But make the general election about Trump.