Romney is against Trump. Not Cruz or Rubio. Another fine defacto endorsement of Cruz and I guarantee you Trump will mention that in the debate tonight.
This could be good for Trump....if he uses it. Trump can say, “see I am the outsider and the GOPe is against me. Cruz and Rubio obviously are part of the establishment as Romney wants them.” Obviously Trump can use this a lot better then I can but I really hope he uses this somehow tonight.