Who is ahead in the Democratic primary race?

Twenty-seven candidates have thrown their hat into the ring for the Democrats’ presidential nominating contest in 2020. This field, the largest ever, includes United States senators and House representatives, mayors, entrepreneurs and even a self-help guru. Some candidates have already withdrawn. Those who remain are engaged in a battle for the future of the party. This portal will help you keep track of who is winning and who is losing and, perhaps more interestingly, why. CONT.

The Economist