Sonia Sotomayer will be confirmed with a vote of about 75-25. At best/worst, she would be confirmed at 60-40. In other words, Republicans CANNOT stop this Judge from becoming the newest Justice.
Furthermore, the Democrats and media have already cried "foul" at conservative opposition to Judge Sotomayer, calling her opponents sexist and racist. Now, I haven't educated myself on her background at all, but does she even matter? As I said a while ago (see below), assuming she is a flaming liberal -- and she may well not be -- she will be 1 incomming liberal vote replacing 1 outgoing liberal vote on SCOTUS. So who cares?
Summarized: Republicans cannot block her confirmation, conservatives risk losing greater numbers of hispanic and female voters, and Sotomayer on SCOTUS is inconsequential.
My question to you, dear reader: why in the world would Republicans or conservatives mount opposition to Judge Sotomayer's appointment to SCOTUS?