Michael Bloomberg Joins Crowded 2020 Democratic Field

Former New York Mayor Michael Bloomberg announced he is running for the Democratic presidential nomination, offering his own mix of moderate policy stances and experience in business, government and philanthropy as the way to beat President Donald Trump.

Bloomberg, 77, called Trump “an existential threat to our country and our values” as he joined a crowded field of candidates, with fewer than three months before the Iowa caucuses. His late entry will create added difficulties as he seeks to build a campaign infrastructure and support in key states.

“I’m running...