Populist movements influence mainstream politics by challenging established political norms and calling for a reevaluation of the political landscape. They often capitalize on widespread discontent with traditional parties, portraying themselves as champions of the "common people" against a perceived corrupt elite. This rhetoric can shift the focus of mainstream parties, prompting them to adopt populist policies or rhetoric to regain support. Additionally, populism can reshape political discourse by prioritizing issues like economic inequality or national sovereignty. Ultimately, these movements can redefine political alliances and alter the trajectory of policy discussions.