As nouns the difference between populism and neopopulism

is that populism is a political doctrine or philosophy that proposes that the rights and powers of ordinary people are exploited by a privileged elite, and supports their struggle to overcome this while neopopulism is a cultural and political movement, mainly in Latin American countries, distinct from twentieth-century populism in radically combining classically opposed left-wing and right-wing attitudes and using electronic media as a means of dissemination.