KBH would be great if she were 8 to 10 years younger. She would be 69 when the election came around. I think that Mitt needs someone younger if he is going to make much of a dent among the under 30 voters.
Martinez would be sure to help among Hispanics, but in terms of international affairs, she would be of zero help. She could help carry NM and perhaps CO.
Kelly Ayotte would help win New Hampshire which could get Romney to 270. But except maybe for Maine, she wouldn't bring in any other northeastern states (though she might help in NJ and PA). She would be a plus with the under 30 voters.I don't think the addition of Cathy McMorris Rodgers would be able to tip Washington to Romney.
I can't think of any other female Republicans who would be worthy of consideration for VP. On balance, my choice would be Kelly Ayotte based on her experience as a state AG and US Senator, youth, and ability to bring home New Hampshire.
This idea that certain VP candidates can help in certain states almost never seems to have worked in the last 40 years. I think it is more a matter of choosing someone who could make a positive allround contribution.
