What's dividing voters in the 2020 Democratic primary?

Demographics, sexism, racism and—yes—ideology

I never imagined that my feelings toward Cicis Pizza would become an issue in the 2020 primary:

The Takeaway: Demographics is density—except that there are a bunch of political attitudes that correlate with vote share but are not entirely explained by demography. In survey data, Joe Biden does better with sexists and racists than other candidates, and Elizabeth Warren does better with voters who want to abolish ICE and oppose deporting illegal immigrants. I mean, duh—this isn’t rocket science y’all. My point? Sometimes it’s just nice to see that our hypotheses about demographic characteristics and political attitudes are correct.