For fun: 2012...

[Хahar 🤔]

Okay:
Possible candidates for 2008:
John Breaux ()      Mark Warner (No)
John Edwards (Yes)   Condoleeza Rice (HELL NO)
John McCain (DING DING DING)      Donald Rumsfeld ()
Rudy Giuliani (Yes)     Colin Powell (Nope)
Bill Frist (No)             Ed Rendell (No)
Bill Owens (No)         Jim Talent ()
Chuck Hagel ()     Dirk Kempthorne ()       
Hillary Clinton (Duh)   Norm Coleman ()
Dan Quayle ()      Mike Huckabee (Yes)
Bill Richardson (Yes)  Jeb Bush ()
 ADDED IN:
Rick Santourum ()   Mitt Romney (Yes)
Tim Pawlenty (No)     Tom Vilsack (Yes)
Tom Daschle ()      Bob Kerrey ()
Dick Durbin (No)        Bill Bradley (No) 
Evan Bayh (No)         Alan Keyes (Meh)

AND INDEPENDENT:
Jesse Ventura ()