U.S. Markets closed

The Democrats’ Age Divide Is Defining the 2020 Primary

Ronald Brownstein
The Democrats’ Age Divide Is Defining the 2020 Primary

When the progressive tag team of Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez skirmished with Joe Biden this week over climate policy, the altercation pointed toward the former vice president’s most glaring vulnerability in the 2020 Democratic presidential race—while simultaneously underscoring the imperative for him to defend his greatest asset. For the 76-year-old Biden, that’s an acceptable trade-off because voters older than 45 cast fully 60 percent of all votes in the 2016 Democratic primary, according to a cumulative CNN analysis of all the exit polls conducted that year. It’s not hard to see this week’s rebuke of Biden from Ocasio-Cortez—which began when a Biden adviser told Reuters that Biden would seek a “middle ground” on climate policy—as a preview of attacks he’ll face from more liberal 2020 rivals on many aspects of his record, including policies on crime and financial regulation.