What to watch as 14 states vote in Super Tuesday primaries

The Democratic presidential candidates are racing toward the biggest day on the primary calendar, when 14 states vote on Super Tuesday. It’s the day when the primary moves from retail to wholesale. Instead of one state voting at a time, candidates have to focus on contests in every region of the country with all types of voters.

While Super Tuesday won’t necessarily determine who wins the nomination, it has historically been difficult for a candidate who performs poorly on the day to recover. Here’s a look at Tuesday’s contests: THE...