What Went Down At The Fourth Democratic Debate

Sanders just said that political polarization is caused, in part, by our campaign finance system. Sanders is likely wrong. Most of the political science, including a recent book by Ray La Raja and Brian Schaffner, has found that states that try to limit campaign contributions have, in fact, encountered more extreme legislators.

With lots of high-volume argumentation between Clinton and Sanders tonight, it would be easy to forget that most Democrats really like both candidates. Ann Selzer’s recent poll for the Des Moines Register had Clinton with an 86 percent favorable rating among Iowa caucus-goers, while Sanders was at 89 percent.