The dynamic (as much as anything a collective expression of human nature) is what it is.
Arrogant (or- considering the history here- stupid) partisans believe that people are going to go "Oh, Republicans are so much worse- we can't let them back in power." And some -maybe most may think like that.
But NOT the percentage that you need to win- and- as astute and seasoned observers and participants know- Democrats REQUIRE a large volunteer effort and a big turnout to succed in a lot of districts.
Maybe- due to the arrogance and stupidity of some in the "leadership" who think like you, even in Massachusetts.
That's just pathetic- but not unforeseen (as some of us have been saying since the pandering- and failure to fight began in earnest last spring.
Bernie Sanders puts it this way:
Now, I may not be the greatest political strategist in the world, but I don't know how you win elections by ignoring the ideas of the progressives who have worked hardest at the grassroots level for your victories, or the trade unions that have provided significant financial support and door-to-door volunteers for Democratic campaigns. I don't know how you succeed politically when you insult women, who far more than men consistently provide you with great margins of support. How do you preserve a big majority in Congress when you fail to be aggressive in protecting the interests of seniors, a huge voting bloc in off-presidential-year elections? In other words, it should not surprise anyone that the Democrats are in serious trouble.
He's right- it shouldn't surprise anyone. Neither should 1994 have (but it did)- and the same sorts of folks are still playing their loser games (and turning around blaming the base- for their own lack of foresight.