He was anti-war. In 2007-2008. Only a few years when the majority of Democrats voted in favor of the Iraqi War Resolution, something that helped sink Hilary Clinton's 2008 bid. He ran on universal healthcare. He ran on renewable energy. He ran on increased LGBTQ rights.
He won Iowa by 9 doing this. To a war hero. Kamala lost by 13. To a convicted felon who had a track record of screwing over farmers.