Can’t think of a worse choice than Condi, although she could be SOS. Without Ohio in the GOP column, Barack wins. So Portman is a strategic choice. Another good choice is that lady governor of NM, to expand Hispanic voter turnout, and can’t hurt with women voters. As a governor, she has executive experience.
Romney will need the evangelical south and either OH and PA. Santorum would be the preferred choice but I think there’s too much bad blood between the two.