It's because Collins, McCain, and Murkowski aren't actually Republicans. Rand Paul is also a retard. He'd rather keep Obamacare by not voting for a new law that strips most of it, citing: "it doesn't go far enough to replace Obamacare." So instead of passing a version that'll strip the law to its underwear and replacing more of it later, he decides Obamacare should stay instead. I wouldn't be surprised if Kentucky, and Arizona have at least one new senator when they are up for re-election again. Heck, Kentucky should end up with two new Senators since Paul is a fucking dip shit and McConnell is an old fart who can't lead. Why do the American people vote for 75-80 year old people who don't know shit about anything?