Bernie Sanders is changing the face of American politics, a new poll from Harvard’s Institute of Politics suggests.

According to the survey released Monday, Sanders remains the most popular presidential candidate for so-called millennials between the ages of 18-29, 54 percent of whom view him favorably, compared to 31 percent who harbor unfavorable views.

Just 37 percent of respondents say they see Sanders rival Hillary Clinton favorably, compared to 53 percent who do not.

More importantly, regardless of how Sanders fares in Tuesday’s primaries, or in the race for the nomination overall, there’s little doubt that the senator from Vermont is making a lasting impact, polling director John Della Volpe told the Washington Post on Monday.

“He’s not moving a party to the left. He’s moving a generation to the left,” Della Volpe said of Sanders. “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.”

The poll offers a clear picture of how millennials’ support for progressive ideals—those embedded in Sanders’ platform—has increased in the last year.

In 2016, 48 percent of respondents thought “Basic health insurance is a right for all people,” up from 45 percent last year and 42 percent the year before that.

Similarly, 47 percent of respondents said this year that they believe “Basic necessities, such as food and shelter, are a right that government should provide to those unable to afford them.” This percentage grew from 43 percent in 2015.

And whereas in 2015, 40 percent of young respondents said “The government should spend more to reduce poverty,” 45 percent of respondents said so in 2016.