John McCain just came out against the latest GOP attempt to repeal Obamacare

The latest GOP attempt to repeal and replace the Affordable Care Act just hit a major bump in the road from within party ranks.

Arizona Senator John McCain issued a statement on Friday saying he was opposed to the latest repeal and replace attempt, the Graham-Cassidy bill.

“I cannot in good conscience vote for the Graham-Cassidy proposal,” McCain said in the 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 effect [sic] 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.”

The announcement could likely end the latest push by Republicans to repeal and replace Obamacare, as the bill would need 50 votes in the Senate (with Vice President Mike Pence as the tiebreaker). McCain is the third Republican who has joined Democrats in opposition to the bill.

Maine Senator Susan Collins said earlier on Friday she was “leaning against” supporting the Graham-Cassidy bill, and Senator Rand Paul of Kentucky had already said he’d vote against it.

Republicans had been trying to bring the bill, nicknamed for Senators Lindsey Graham and Bill Cassidy, to a vote before September 30.

A study by the USC-Brookings Schaeffer Initiative for Health Policy showed that if the bill passes, 15 million fewer people would have insurance in 2018 and 2019; 21 million fewer people would be insured by 2026; and by 2026, that number could climb to 32 million.