Rand Paul is a no vote because he wants his libertarian utopia. Now Collins is a no vote so the GOP has zero margin.
https://www.cnbc.com/2017/09/22/senator-john-mccain-says-he-cannot-support-graham-cassidy-obamacare-repeal-bill.html
Sen. John McCain, R-Ariz., on Friday said he "cannot in good conscience vote for the Graham Cassidy proposal.