Mr Biden has assembled a multi-cultural coalition that includes the party's African-American voters, white blue-collar workers in the Midwest, white college-educated suburban voters and professional women.
SO it would seem that in the end, conventional wisdom proves spot-on? Well no, not always. Remember when it was said that Donald Trump would never be elected president?
But when it comes to the 2020 Democratic race for the presidential nomination, however, conventional wisdom got it right...