This election feels like a reunion of the Woodstock generation

Sanders already has a substantial lead among millennials, generally defined as those born between 1985 and 1997, beating Clinton by 2-1 in most polls. But her strength is among those aged 50 and over, where she holds a 3-1 edge, and it is even larger among nonwhites and women in that age group.

Sanders is shopping for support among those older voters, and Simon & Garfunkel’s wistful elegy fits his theme like a glove.

If you don’t believe me, do a focus group of the ad at home. Kids will like it, but many of those who were young in the turbulent ’60s and are prime voters now will find it emotionally powerful. The ad skillfully links Sanders’ populist campaign to voters’ memories of the civil-rights and antiwar movements.

Not incidentally, it avoids any specific policy prescriptions that might remind boomers that Sanders is an avowed socialist whose ideas are far to the left of even most Dems. It’s all about pushing the feel-good buttons aimed at getting voters to jump on a ­final bandwagon.