According to this AP report (via ConfirmThem), the schedule for the hearings on Judge Alito worked out by Arlen Specter with the Democrats calls for hearings beginning January 9, a committee vote on January 17, and a vote of the full Senate on Friday, January 20.
Which means that the final vote will likely come either that day or the next business day – Monday, January 23. Sunday, January 22, of course, is the 33d anniversary of Roe v. Wade. Coincidence? Even if it’s not, you can be sure that the timing will ratchet up the tension over the vote.