Link. No other 2020 candidates are discussed by Dan other than Warren, Sanders, and Trump. Not that all Warren supporters should do as and think as Dan does; but each should guess at things all the way to the convention and possibly minimizing possoble discord surviving after the convention ends. That is said before the Bloomberg putsch in Super Tuesday states. The expectation is Bloomberg will garner less power than he'd like, and might stall at some point but with a percentage of delegates pledged via primary voting.
By publishing a preference for the first time this cycle, Burns is burning home the timeframe for a landmark level of Minnesota primary election DFL turnout - the more turnout the better - the more new Democrats voting now, the better.