Garrett comes right out and predicts Ohio Sen. Rob Portman is going to be Romney's choice  for vice president.

His first argument for Portman is rapport.

"This does not come easily to Romney and it matters a great deal. Romney must trust his running mate and feel as if that "portfolio" is in safe and reliable hands. Everything I've learned about Romney's temperament tells me he won't risk his own sense of balance and confidence—his sense of team dynamics—by choosing a flashy or demographically appropriate running mate he doesn't trust and believe in," Garrett argues. 

Funny, but the New York Times just made much of this point in regards Romney's link to Israeli Prime Minister Benjamin Netayahu.