Election 2020 Democrats

Businessman Tom Steyer speaks during the New Hampshire state Democratic Party convention on Saturday in Manchester, N.H.

Tom Steyer, 62, is a billionaire investor, activist and philanthropist known for his marketing campaign advocating for the impeachment of Donald Trump.

Steyer has also been an environmental activist. Fighting climate change and promoting renewable energy are among his signature issues in the presidential race.

Steyer founded NextGen Climate, which he rebranded as NextGen America in 2017.