Bernie Sanders’ small-dollar fueled campaign comes to an end

Outside groups pour money into Biden support

Democrats spent over $1 billion on failed presidential bids

Low on cash and delegates, Warren ends her White House bid

Bloomberg’s half-billion dollar investment failed to pay dividends

Warren faces challenge from Sanders in home state despite financial backing

Two of this cycle’s top megadonors are running for president

Mass spending in New Hampshire follows mass confusion in Iowa

Michael Bloomberg obliterates self-financing records months into presidential bid

2020 presidential candidates’ political ad spending floods Super Bowl