With the GOP presidential nomination all but wrapped up, frontrunner Mitt Romney's team is turning its attention to picking running mate. Who's on Romney's short list? ABC News' Jon Karl offers up his predictions:
Top Tier: Rob Portman, Marco Rubio, Jeb Bush
Second Tier: Chris Christie, Mitch Daniels, Bob McDonnell, Paul Ryan
Top women candidates: Kelly Ayotte, Mary Fallin, Nikki Haley, Susana Martinez
Wildcard: Gen. David Petraeus
Others who will get a look: John Thune, Jim DeMint, Tim Pawlenty
Who else would you add to the list?