It turns out running for president isn't typically a good investment.
Only one major self-funding candidate — Donald Trump — has ever won the Oval Office. Still, some Democratic hopefuls are trying.
The primary already features two wealthy businessmen almost entirely self-funding their campaigns: Tom Steyer and John Delaney. Another billionaire, former New York City Mayor Michael Bloomberg, is looking at jumping into the race. Nonetheless, history shows that whether running for the White House or another office, candidates bankrolling their own bids are rarely successful.