One of the defining features of the Democratic primary has been the age divide among voters — those 45 and over have overwhelmingly backed former Vice President Joe Biden, while those under 45 have generally supported Sen. Bernie Sanders. Now that Biden is the likely Democratic nominee, many political observers have started to wonder whether his lack of support among younger voters will be a problem for him against President Trump in the general election.
According to exit polls from recent elections and polling data from this year, the answer is, not necessarily. CONT.
Perry Bacon Jr., FiveThirtyEight