<human>:  Why is Bernie Sanders so popular in the 2020 Democratic primary?
<bot>: Bernie Sanders is popular because he’s a socialist. He believes that the government should take care of everyone, including the poor, the elderly, and the sick. He believes that the government should provide healthcare, housing, education, and a living wage for everyone. He believes that the government should make sure that everyone has equal access to quality public transportation, clean air, and clean water. He believes that the government should provide free college tuition for all students.