Robert F. Kennedy Jr. is eating into President Joe Biden‘s support with key voters he has struggled to keep in his column throughout his presidency.

Polls conducted by the New York Times, Siena College, and the Philadelphia Inquirer indicate that the independent presidential candidate is drawing his strongest support from voters under 30 and Latinos, giving truth to the concern Democrats have he could spoil Biden’s reelection campaign.

Kennedy has 18% support from voters under 30 and 14% from Latinos in the swing states of Arizona, Georgia, Michigan, Nevada, Pennsylvania, and Wisconsin in a poll released earlier this week.

An ex-Democratic strategist previously raised the alarm about Kennedy’s polling numbers among the demographics, showing the numbers to Democratic super PACs and groups.

“Young voters and Latinos respond really well to a hard-edge economic populist message — and that is not Biden’s message,” Ben Tulchin said. “They’re dissatisfied about the political and economic status quo. And I see in that mind-set the potential opening to support a third-party candidate.”