Bernie Sanders’s path to the 2020 Democratic nomination, explained
This week, for the first time, the progressive senator from Vermont emerged in first place in a national CNN poll, showing him 3 points ahead of former Vice President Joe Biden, though within the margin of error. For months, Sanders has been hovering around 20 percent in the RealClearPolitics national polling average, but some good recent national and early-state polls are putting him on an upward trajectory.
If his campaign can turn out Iowa’s sizable Latino population and working-class voters, Sanders is bullish about winning the February 3 caucuses. That...