Populism and nationalism intersect in political movements as they both emphasize the role of the 'common people' against perceived elites or outsiders. Populist leaders often employ nationalist rhetoric to rally support, appealing to sentiments of sovereignty and identity. This intersection can foster a sense of belonging among specific groups while alienating others, leading to polarized political climates. As these movements gain traction, they can reshape party dynamics and influence policy outcomes, reflecting broader societal anxieties and aspirations in contemporary politics.