I would not bet on too many of those. McCain's biggest problem was he surrounded himself with a bunch of RINO advisors. McCain's lead advisor was the main player convincing Bush Sr. that Souter was a conservative, eventhough he knew otherwise. Considering the company McCain keeps, those predictions would be highly unlikely.
...You're speaking, of course, of Warren Rudman--one of the most conservative senators to have ever served. Souter was Rudman's deputy when he was Atty. Gen. of N.H., so it's true that he backed Souter's appointment. HOWEVER, Bush the Elder was advised not to nominate him by plenty of other voices (Jesse Helms among them) who viewed Souter as a bit too effeminate (if not outright homosexual) but Bush The Elder went ahead an did so anyway and, THEREFORE, he was at the place where the proverbial buck stops. Although I voted for them 3-out-of-3 times, I wish the Bushes (both Poppy and Shrub) would be a bit more accountable when it came to things they are responsible for--McCain, at least, is!