Warren still hurts Sanders, even in a narrowed field
Drop-outs by Buttigieg and Klobuchar haven't changed the basic math.
A new argument for Warren staying in the race is circulating in the discourse right now, it goes something like this:
Among Warren supporters, 33% support Bernie as a second-choice, 25% support Buttigieg, 8% support Biden, and 7% support Klobuchar - at least, according to Quinnipiac.
Warren voters who support Klobuchar or Buttigieg as a second choice prob…