In recent weeks, many Democrats in Silicon Valley had kept uncharacteristically quiet as prominent technology leaders — including Elon Musk and the investors Marc Andreessen and Ben Horowitz — endorsed Donald J. Trump for president. Even though Democrats had long been a dominant force in Silicon Valley, some were unenthusiastic about supporting President Biden, who was unpopular in the tech industry. They wanted to see if Mr. Biden could change the narrative around his struggling campaign. And those who were vocal in their support — such as the tech investor Reid Hoffman — faced attacks. Across the tech industry, the floodgates immediately reopened.

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Persons: Elon Musk, Marc Andreessen, Ben Horowitz —, Donald J, Trump, Biden, Reid Hoffman —, ”, Nihal Mehta Organizations: Elon, Mr, Democratic, Eniac Ventures Locations: Silicon Valley, New York