One of the perennial challenges facing the Nigerian polity is corruption and the political space was not left out in this regard. Despite the fact that political parties are the bedrock of democratic settings as they perform the functions of political recruitment, socialization, articulation as well as strengthening the competition in the political space, lack of ideology, corrupt practices and intra-party contradictions have hindered them from meeting their expectations. This paper interrogated the effects of corruption on political party performance in Nigeria’s Fourth Republic with much focus on the Peoples Democratic Party (PDP) and to proffer solutions on how the menace could be curbed to enhance the internal democracy and potential of the PDP to capture the state power. The paper adopted qualitative research method through the use of secondary data such as journals, textbooks and periodicals and also utilized the clientelism model as a framework of analysis. The study reveals that corruption has eaten deep into the fabric of all democratic institutions in the state including the political parties as the electoral processes have been monetized beyond reasonable doubt. The study, therefore, recommended among others that the democratic institutions in the state such as political parties and the electoral commission be strengthened so as to promote good governance, values ethics and national prosperity. Again, there should be focus on meritocracy in selecting the leadership of political parties and party candidates rather than emphasis on nepotism and relying on patron-client agreements where the patrons decide who and how leaders are elected. This will go along to establish a just, fair and an egalitarian society.