If you really want to see the extent of Bernie’s problem this year, compare the results of the Vermont primary yesterday with those of 2016. Not the exit poll data, but the votes themselves. He won with 85% last time, or just shy of 116,000 votes. Yesterday, with 16,000 more Vermonters coming to the polls than in 2016, he got 50%, about 80,000 votes. In a four year span Bernie lost over 35,000 voters in his home state. That is, one of every three Bernie Sanders for president supporters in Vermont in 2016 voted for someone else this time. And that in a state that is 94% white and 1.3% African-American.
You can’t lose a full third of your base in your base and expect to win the presidency.