By Forbes’ tally, he and his wife Kat Taylor were the second-largest billionaire spenders of the 2020 election. : By Forbes’ tally, he and his wife Kat Taylor were the second-largest billionaire spenders of the 2020 election. Hedge fund billionaire Tom Steyer spent $342 million on his own presidential campaign in the 2020 election, plus another $73 million supporting left-leaning causes and voter-registration efforts. This year, unsurprisingly, Steyer has donated far less, just $1.3 million, according to a review of Federal Election Commission data. About three-quarters of that amount has gone to his own political action committee, Tom Steyer PAC.