This is interesting

From The Weekly Standard:

Among well-known liberal senators, John Kerry had an adjusted ADA rating of 88, close to Ted Kennedy's 89. On the conservative side, Bill Frist had 10, whereas John McCain had 13. Results closer to the center were Joe Lieberman's 74, John Breaux's 60, Arlen Specter's 51, and Olympia Snowe's 43.

So Specter is too liberal for the kids in the Corner even though he has an ADA rating of 51. Joe Lieberman is close to Ted Kennedy and is objectively more liberal than Specter. Yet NRO covers him with slobbery kisses.