"If Republicans nominate Donald Trump, they nearly cede the White House to Hillary Clinton. Trump wouldn't merely be an underdog in the general election. He would be the worst Republican nominee since Alf Landon 80 years ago.-Timothy P. Carney
The polls show Trump would be a disaster. To date, Trump's message control has been a disaster, and it would be a disaster in the general election. His political inexperience, which has hamstrung him in the primary cycle, would be a disaster in the fall."