Indeed - there is no political price, and the GOP and the dems who joined them will get a bit of an upside, but not much.
You're right.
They may think Congress shouldn't have become involved, because of the he said, she said nature of the family dispute, but the majority who oppose this do not do so because of the fed/states' rights angle.
And when all is said and done, ain't nobody wants to be seen as aiding and abetting schiavo and his boys. They are all pariah, deserved or not.
The judiciary is what will take the hit, because the impression they left was that there was absolutely no quarter in which Terri could find aid and comfort. No quarter!
And finally, all the energy that can be morphed politically is on the side of life. The purveyors of death, how are they going to be able to inspire people and subsequent success by that?