Those senators who depend on "red meat" conservatives for support will come out against this deal. Just read the rantings of folks here and you'll understand why.
Seriously, a part of me would've liked to see this played out to completion, but I'm willing to step back and see what happens with this because I understand how politics work in Washington. I don't like how politics in Washington work sometime, but barring a real revolution we're not going to change how politics work in Washington anytime soon.