Tech billionaires are plotting sweeping, secret plans to boost Joe Biden

Joe Biden has a problem. Silicon Valley billionaires think they have a solution.

Election Day is less than six months away, and Democrats are scrambling to patch the digital deficits of their presumptive nominee. And behind the scenes, Silicon Valley’s billionaire Democrats are spending tens of millions of dollars on their own sweeping plans to catch up to President Donald Trump’s lead on digital campaigning — plans that are poised to make them some of the country’s most influential people when it comes to shaping the November results.

These billionaires’...