“If I had to bet today, we’ll get to Milwaukee and not have a nominee,” said Ms. Daughtry, who was neutral in the 2016 primary.
The reason, she theorized, is simple: Super Tuesday, when at least 10 states vote, comes just three days after the last of four early states. After that, nearly 40 percent of the delegates will have been distributed — and, she suspects, carved up among candidates so that nobody can emerge with a majority.
Unlike Republicans, who used a winner-take-all primary format, Democrats use a proportional system, so candidates only need to garner 15 percent of the vote in a primary or caucus to pick up delegates. And even if a candidate fails to capture 15 percent statewide, he or she could still win delegates by meeting that vote threshold in individual congressional districts.