Assuming Romney is the projected nominee, he will need a VP that will please the GOP,Tea Party & Conservative Base. Most of us want Marco Rubio, but he still hasn't shown any serious interest. That leaves McDonnell&Ryan next in line. Either one will give Romney a boost against Obama. Virgina&North Carolina being crucial would be the reason to choose McDonnell. Wisconsin & the rust belt would be the factor with Paul Ryan. It's a tough decision. There are a few others, but if there was a poll, Ryan would probably be the choice if Rubio bowed out.