The party that ran a populist message won. When their economic situation is dire, people turn to populist leaders. When there’s no populist movement in the left (usually some for of socialist/labor movement) they turn to right-wing populism (fascism). Democrats spent the last 12 years stamping out any kind of pro-labor movement that started in their party in favor of neoliberal centrism, and now their losing to right-wing facism.