The spot, called “Monster,” is focused on reproductive freedom, an issue that Eilish cited in her endorsement video along with Finneas. The ad spot features Hadley Duvall, a Kentucky woman who became pregnant after her stepfather raped her at age 12 after years of sexual abuse.

A day after endorsing Kamala Harris, Billie Eilish has allowed the Harris-Walz campaign to use her song "When the Party's Over" in a nationwide ad supporting reproduction rights. The "Monster" ad, which began airing Wednesday in battleground states,

Billie Eilish and her brother Finneas shared a video on National Voter Registration Day endorsing Kamala Harris for president.