Chaim:
How do you know these things?
I felt that Obama and his campaign feared the issue of inexperience and thought that Biden would solve that problem for them.
BTW, despite the fact that I expected Obama to pick Biden, I think former Senator Sam Nunn of Georgia would have been a wiser choice. Nunn is extremely popular in Georgia and the Deep South, and he would have given Obama a chance to win several Southern states. Nunn was also a prominent Senator for many years, and so he could have helped with the experience issue. And Nunn would have helped even outside of the South because he really was not a leftwing Democrat.
Obama instead picked Biden, a leftwing Senator from a tiny leftwing Northeastern state, Delaware. I think the Biden selection was a foolish move, but I expected it because Obama, the news media and the national Democrats live in their own little elitist world. Fortunately, they do not understand middle America.
Now let's see if my other prediction from last week is correct: I also predicted that John McCain would pick Mitt Romney.