Max Ehrenfreund writes: After Bernie Sanders’s defeat in New York last week, his chances of winning the Democratic nomination are dwindling. Yet, even if he loses this campaign, a poll published Monday suggests that Sanders might have already won a contest that will prove crucially important in America’s political future.

The poll of Americans between the ages of 18 and 29 finds that Sanders is by far the most popular presidential candidate among the youngest voters. This group’s attitudes on a range of issues have become more liberal in the past year.

The data, collected by researchers at Harvard University, suggest that not only has Sanders’s campaign made for an unexpectedly competitive Democratic primary, he has also changed the way millennials think about politics, said polling director John Della Volpe.

“He’s not moving a party to the left. He’s moving a generation to the left,” Della Volpe said of the senator from Vermont. “Whether or not he’s winning or losing, it’s really that he’s impacting the way in which a generation — the largest generation in the history of America — thinks about politics.” [Continue reading…]