Sanders has the donors, Biden leads polls in Tuesday primary states

Democrats spent over $1 billion on failed presidential bids

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

South Carolina donors give the greatest amount to Biden as Sanders cuts into the lead

Past spending comes back to 2020 Democrats in the form of endorsements

Super PACs backing Warren and Klobuchar won’t disclose donors until long after Nevada

2020 presidential candidates’ political ad spending floods Super Bowl