evidence: President Joe Biden’s decision on Sunday to withdraw from the presidential race and endorse Vice President Kamala Harris galvanized Democratic donors, injecting tens of millions of dollars into a campaign that was rapidly burning through cash. Within 36 hours of Biden’s announcement on July 21, Harris raised more than $100 million, according to her campaign, including $81 million in the first 24 hours. The $100 million cash infusion would more than double the $96 million the Biden-Harris campaign had in cash on hand at the end of June. [...] Harris has also demonstrated the ability to mobilize donors in previous elections. She raised more than $40 million during her 2020 presidential campaign before dropping out and becoming Biden’s vice president. During her 2016 Senate campaign in California, Harris raised more than $15 million.