Billie Eilish and her brother Finneas have endorsed Kamala Harris for the 2024 presidential election, emphasizing the importance of voting on National Voter Registration Day. In a joint video, they urged their followers to support the Harris-Walz ticket, highlighting key issues such as reproductive rights, environmental protection, and democracy. Eilish stated, 'Vote like your life depends on it,' while Finneas warned against allowing extremists to dictate freedoms. Their endorsement follows a trend among celebrities supporting Harris, including Taylor Swift, who praised her leadership. Eilish's activism includes a notable performance at the 2020 Democratic National Convention, showcasing her long-standing political engagement. The endorsement has sparked positive reactions from fans, further energizing support for the Harris campaign.