Another Reason Why Bloomberg Hurts The Democrat

A smart Democratic strategist e-mails:

"I can’t see how [as Bloomberg run] doesn’t hurt the Democrat, just be making us spend big in expensive Northeastern states. It seems like it kills HRC."

Where in the South can Bloomberg reasonably expect to win? How does he get to 270 electoral votes? What type of coalition can he build that would allow him to, in absence of a 270-electoral vote margin, win a contested election in the House of Representatives?