This story was originally published by Inside Climate News and is reproduced here as part of the Climate Desk collaboration. On Tuesday, the youth-led activist group Climate Defiance—which had loudly called for Joe Biden to withdraw his bid for reelection earlier this year—endorsed Kamala Harris for president. But despite that support and soaring enthusiasm from young people after Harris replaced Biden on the Democratic ticket, with less than 40 days left until the election, excitement has cooled off among many young voters who are prioritizing climate and calling for stronger commitments from the candidate. After the September 10 debate, some young voters and climate groups were unimpressed by both candidates’ support for oil and gas production, voicing dismay over Harris’ shift to the center on climate. “If Harris wants to win, she needs to be far more progressive than she was tonight,” wrote Gen-Z for Change on X after the debate.