Roberts nomination

Again, I have to point out, the republicans control both the house and the senate, oh and by the way, the president is also a republican. Also, it would not go over well with the American public to filibuster a supreme court nomination and there was an agreement between 14 senators to not filibuster judicial nominees unless there were serious issues. Additionally, if the democrats tried to filibuster the nominee, the republicans have the power to end the filibuster rule. The democrats are there merely to advise in these proceedings, Bush does not have to select moderate justices to get them through.
Therefore its in the democratic party's best interest not to bring this to the attention of the republicans. By turning Roberts nomination into a demonstration that the democrats will not support even a moderate republican, it merely encourages republicans to say 'screw you' to the democratic party and nominate right wing justices.
Personally, I hope most democrats vote against Roberts tomorrow as that would likely lead to a nominee like Judge Edith Brown.