My theory is that most of the undecideds/late-breaking primary in general are #NeverBernie folks waiting to see who is most viable in their state. I mean, I'm unusual in that I'm a pretty staunch Buttigieg supporter who actually likes Sanders, but I'd bet money that a good 75% of Pete's supporters would drop him like a bad habit without a second thought if they thought someone else had a better shot of beating Bernie. Same with Klobachar and her supporters, for that matter.
The problem with this analysis implies there's a monolith of centrist voters only voting against Bernie Sanders. There's not.
