Alexander Bolton, The Hill:
Republicans in Washington see the two Republicans battling with Rubio at the top of the GOP field, Donald Trump and Sen. Ted Cruz (R-Texas), as weaker general election candidates.
Many lawmakers in Washington like Bush, but believe the shots his allies are taking against Rubio will only hurt their party. Hatch noted that Bush is prohibited by law from coordinating with the PAC and therefore does not bear blame.
Roberts said the deluge of negative ads hitting Rubio could make it tougher to get the party to rally around him if he becomes the nominee.
“It works to a certain degree but there comes a time when it hurts our ability to unify after the nomination,” he said.
Another neutral senator, who requested anonymity to comment frankly, criticized Right to Rise’s tactics.
“I think it was a huge mistake, I really do,” he said, adding that Rubio’s sporadic attendance record in the 114th Congress — a favorite focus of Right to Rise — was a non-issue.
Paul Lindsey, a spokesman for Right to Rise, did not respond to a request for comment.