Mike Bloomberg spent more than $1 billion on his short-lived presidential campaign

A new Federal Election Commission filing shows that former New York City Mayor Mike Bloomberg spent more than $1 billion of his own money on his presidential campaign, which only lasted a little over three months. Before he dropped out of the Democratic race in early March, Bloomberg's ads were ubiquitous. He won just one contest, in American Samoa, spending about $18 million for each delegate. Bloomberg hired close to 2,400 campaign staffers across the country, and said he would keep paying the...