Challenges facing minority parties in a bipartisan system include limited visibility and resource allocation, which often hinder their ability to compete effectively. These parties struggle to gain media attention and public support, as electoral systems typically favor two dominant parties, leading to a lack of representation for alternative viewpoints. Additionally, minority parties may face legal and institutional barriers, such as restrictive ballot access or debate participation rules. This marginalization can diminish the diversity of political discourse and influence within the political landscape.