I was at the Young Turks site a week or so ago.
Their reactions ranged from:
scoffing at Trump mixed with forlorn bleats for Bernie to save them,
to worried acknowledgements that Trump might actually have a chance of winning,
to unconcealed admiration and identification with Trump.
If you want to make a leftie’s head explode tell them
Trump will win in large part due to a massive Democrat crossover vote for him.
I agree. I expect Trump will carry NY, NJ, CT, and PA. That switch alone would make a D victory in 2016 a near impossibility. Cruz on the ticket will keep the red states solidly red while Trump's crossover appeal will see supposedly "safe" blue states in play all over the place.