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CBO may have just blown up the health care bill

David Zalubowski / AP

Unless Senate Majority Leader Mitch McConnell can change some of his members' minds pretty quickly, it's looking like he might not have the 50 votes he'd need for a procedural motion that would bring his health care bill to the floor. The CBO's estimate that 22 million more people would be uninsured under the Senate bill was a steep — and maybe fatal — setback.

The proof: Sen. Susan Collins tweeted that she'll vote against the procedural motion to bring up the bill on Wednesday. Others have been making noise, too. If enough Republicans vote against it, the whole effort could end right there.