Democratic tension on display in California

Senator Kamala Harris
Democratic Sen. Kamala Harris at an October rally in Irvine, California. Photo; Kevork Djansezian/Getty Images

The fight between the Democratic Party’s far-left and establishment wings will play out this weekend at the party's convention in California. It'll be on display in competing speeches and endorsements.

Why it matters: This intra-party fight, if it drags into the midterm elections, could hurt the chances of Democrats in winning control of the U.S. House.