Populist leaders change political narratives by challenging existing elites and framing themselves as champions of the common people. They often use rhetoric to highlight societal grievances and simplify complex issues, which resonates with disaffected citizens. By positioning their message as a fight against corruption or injustice, these leaders can attract broad support and reshape public discourse. This transformation can lead to significant shifts in policy focus, altering traditional party dynamics and reshaping political landscapes in ways that reflect populist sentiments.