Inside the 3 days that remade the Democratic primary

At Mike Bloomberg’s midtown Manhattan campaign headquarters, a team of pollsters and analysts churned out multiple tranches of data each day on the state of the Democratic race. The sophisticated data operation was supposed to be the candidate’s not-so-secret weapon, giving Bloomberg an almost real-time look at voters’ preferences in key states and allowing the campaign to rapidly move around its vast resources.

But after Joe Biden’s commanding victory in the South Carolina primary, the numbers moved too fast for Bloomberg’s money to catch up. …

Just three days after Biden’s South Carolina victory, 10 more states confirmed what Bloomberg and other candidates were seeing: a stunning consolidation of support around Biden by a diverse swath of the Democratic electorate. CONT.

Julie Pace, Thomas Beaumont & Sara Burnett, Associated Press