Political experts say that hefty campaign spending can boost candidates, though it also has notable limits.

Billionaire Tom Steyer sank more than $213 million of his own money into what now looks like a failing bid for California governor.

The billionaire investor also spent more than $300 million of his own money on a failed bid for president in 2020.

Tom Steyer has spent over $550 million on two election losses because billionaires can't just buy their way into the hearts of voters.

Political experts say that hefty campaign spending can boost candidates, though it also has notable limits.

Political experts say that hefty campaign spending can boost candidates, though it also has notable limits.