A potentially very important development this evening on the Obamacare repeal front, as TPM's Lauren Fox reports. HELP Chairman Lamar Alexander (R-TN), a key figure in internal GOP wrangling over repeal and eventual (if ever?) replacement, told reporters on the Hill that Obamacare repeal should come after a replacement is in place and "available" to consumers.

At the same time and in a similar vein, Alexander's fellow Tennesseean, Bob Corker, was expressing his frustration that repeal as planned would wipe out the tax revenue to pay for an Obamacare replacement.

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