Biden is a left wing Democrat.
That is an indiputable fact. Since the Democrat Party's nomination is skewed towards money, media, and the looney fringe, he will never be nominated. That said if he had been nominated, he might have won where Dukakis lost, he would have won where Gore and Kerry both lost. The Democrats will always nominate a left winger, I am thankful they seem to most often nominate those left wingers who are stumblers and bumblers and have trouble connecting to the common folk in the center who determine the outcome. Biden may be a left winger but his chances of connecting with swing voters are better than any of those on this stage.