Cruz and Ohio Gov. John Kasich addressed the RNC this week. Also present were leaders of Our Principles PAC, an anti-Trump super PAC, who huddled privately with some members Friday. The group’s chairwoman, Katie Packer, distributed a memorandum urging party leaders to do everything possible to stop Trump from locking up the nomination.

“It is not too late,” Packer wrote. “You are under no obligation to wrap your arms around a candidate who has not won a majority of GOP votes, or a majority of delegates, and perhaps wouldn’t even be the frontrunner had the original field been much smaller.”

Yet in hallway chatter here, there was a growing sense of resignation about Trump as the nominee.

“I sense that everybody has come around to the position that what we choose is what we choose and that to have an opponent to Hillary Clinton, you take what you got and you run with it as fast as you can,” said David Norcross, a former RNC general counsel.