Opposition parties in authoritarian systems face numerous challenges, including limited political space, repression, and lack of media exposure. Authoritarian regimes often suppress dissent, making it difficult for opposition groups to organize effectively or campaign freely. Additionally, opposition parties may struggle with funding and access to resources, as the state can control financial support and media coverage. Political repression can lead to the arrest of members, undermining the ability to challenge the ruling party. Overall, these factors create a hostile environment that stymies the growth and influence of opposition parties.