That task will be easier without Specter as chair.
That task will be nearly impossible if he is made chair.
Specter has made it very clear in his writings that he believes the Constitution is a "living document" that must be adapted to conform to its times (that is, to the personal opinions of the liberal elite) and that a justice who is unwilling to implement this progessive, acvitist agenda is not fit to sit on the SCOTUS. That's why he "borked" Bork and despises Scalia.
Specter is a tough nut. If he gets the chairmanship no one should expect him to roll over and help get conservative justices approved. The risk is too grave that he will dig in his heels and become as obstructionist as Daschle ever was, but from within the Senate Republican leadership itself. On the floor, he'll form common cause with Chaffee, Snowe, Collins and possibly McCain to cripple all efforts to restore SCOTUS to its proper role as a court, away from its current majority's destructive tendencies as a superlegislature of liberal life peers of the realm.