Biden is a smart, well-spoken politician...and if he got the job, I think he'd make reasonable decisions. He certainly knows the issues after all these years.

...But I don't think most of the public considers him charismatic enough....he just isn't viewed AS presidental material by many. If he is in the race, though, he will likely do a decent job of keeping some focus on relevant issues.....and just maybe, if the winds are right and others stumble, he could sneak in like Woodrow Wilson did when Taft & Roosevelt split each other's vote.