“I’ll be frank with you,” Portman said. “I think there are a lot of great choices out there and I think he’s got plenty of other people to call first. I just don’t think about it much because I don’t think it’s going to happen.” The former Ohio Congressman often has been mentioned as a possible candidate to complement McCain because he is very popular in his home state, which is almost certain to be a major presidential battleground once again this cycle. Some Republicans believe Portman’s relatively young age, 52, his background in budget issues and his home state could help the GOP win Ohio and turn out conservative voters across the country…