What Went Down In The Arizona, Florida And Illinois Primaries

Cook County was more than half the vote in the Illinois Democratic primary in 2016, so if Sanders continues to run about even with Biden there, the statewide margin will eventually narrow meaningfully.

Reader question

I mean, the two basic considerations are (i) having someone who seems ready to step in on Day 1, especially given the age of Biden (and Trump) in the age of the coronavirus, and then (ii) potentially either balancing or doubling down on the ticket, depending if Biden wants to go with a more traditional balancing or Clinton-Gore double-down approach.

A third consideration might be picking a candidate from a swing state, although that only matters at the margin. I generally think the first consideration would lead Biden to pick a big trusted name like Amy Klobuchar or Kamala Harris. The conventional wisdom then seems to be that ticket-balancing is more important than doubling down on your strengths, which might tip things to Harris more than Klobuchar, but I’m not quite sure it’s quite so obvious that balancing is better … that’s something for a longer essay.