We don't know what they're going to vote on.
And neither do they.
Among the options being considered by Senate Republicans are "repeal and replace," "repeal and delay," and "repeal and go fuck yourself" but we may not know until the last minute which option will actually make it to the floor of the Senate.
Senate Republicans will hold a meeting tonight where they will ostensibly decide what they're going to do.
That is where we will get the first indication of whether any plans have shifted or changed. We'll also get the first reaction to the Byrd Rule guidance the Senate Parliamentarian dropped like a grenade into the debate on Friday night. [...]
"It's time to put everyone on record," one senior GOP aide told CNN on Sunday. "At this point, nothing's going to change until we do."
The Senate parliamentarian announced late on Friday night that Republicans cannot use the reconciliation process to pass over half a dozen provisions included in every version of Trumpcare they're considering including a provision that bans plans that cover abortion.
That may complicate matters because some Republicans may not support a bill that doesn't include those provisions, while some may support it now that they've been stripped from it. We also don't have a CBO score on a theoretical bill that doesn't include the provisions that will have to be pulled from it.
Whatever Republicans decide to vote on tomorrow, the outcome will depend on a small handful of Republican senators who I don't necessarily trust even if they've publicly said they will vote 'No.'