If the Democrats Bork her, it only makes Bush look weaker than he already looks and increases pressure on him to come up with an even more "concialatory" nominee to hasten the process along. If the Democrats let her sail through, Bush pisses off his base. If Republican senators don't like her, then that doesn't help the Republicans in either the WH or the capitol. If a supreme court nominee has to rely on his obscurity instead of his intellect to get into the court, he probably is going to be outsmarted time an again by the people who have turned the courts into legislatures.
Note to Hillary: Let SC nominations sail through. Piss-off reactionary conservatives. (Like this isn't already the strategy?)
BTW, if the conservative base has to rely on doing the opposite of what the Democrats do (instead of using intellect and thinking for themselves)then they are probably going to be outsmarted time and time again.
...know what I mean?
I suspect that the democrats aren't going to put up too much of a fight. As long as they get a nominee who isn't going to curtail federal powers, won't make abortion illegal, and won't curtail the move to grant special rights to homosexuals they'll be happy.
They'll let this nominee through because it serves their purposes.