I just read OpenLeft, and now it is certain that the White House and Democratic Leadership are going to try to end the filibuster. The Senate GOP now needs to be prepared to preserve the filibuster no matter what. The GOP needs to prepare a PR offensive in order to counter the Democrats, and all conservatives are going to need to consider the support for eliminating the filibuster an act of war.
I don't know how the GOP should carry out its defense, but it is clear now that it has to fight, or else there will be no minority rights in this country. Now is the time to stand up for the filibuster, to ensure that the country is protected from majority tyranny, whatever the cost.