“I cannot in good conscience vote for the Graham-Cassidy proposal,” the Arizona Republican said in a statement. “I believe we could do better working together, Republicans and Democrats, and have not yet really tried. Nor could I support it without knowing how much it will cost, how it will (affect) insurance premiums, and how many people will be helped or hurt by it. Without a full CBO score, which won’t be available by the end of the month, we won’t have reliable answers to any of those questions.”
McCain’s “no” vote means it is likely Republicans won’t be able to repeal and replace Obamacare before September 30, as Sen. Rand Paul of Kentucky said he would not back Graham-Cassidy and Sen. Susan Collins of Maine has said she is leaning “no” on the proposal. But there are still questions as to where Alaska Sen. Lisa Murkowski is at the moment. It’s also unclear if senators on the fence would support a procedural motion on the bill even if they decide they are against Graham-Cassidy in the end.