The magnitude of former Vice President Joseph R. Biden Jr.’s recent primary victories has obscured an important schism within the Democratic Party: between the older voters who carried Mr. Biden to victory and the younger voters who overwhelmingly rejected him.
The dividing line is around age 45, and it is as stark as a flipped switch. In some states on Tuesday, Mr. Biden won two-thirds or more of voters older than 45, while Senator Bernie Sanders of Vermont won about two-thirds of voters younger than that. CONT.
Maggie Astor, New York Times