I really doubt that Roberts, the SCOTUS nominee, will make his first media appearance on the I-man's show. It makes NO sense whatsoever! :-)
Roberts is more Conservative than O'Connor; that you can take to the bank.
OMG, I just did a search for John Roberts and was reminded that there's a CBS White House reporter named John Roberts. He's probably the guy who will be on Imus this morning, LOL!
By the way, I believe Imus did support Dole in '96 and Bush in 2000. However, everything he does is tongue-in-cheek for comedic effect, so it doesn't really mean anything.