Nigeria’s party and electoral politics and its consequences for sustainable democracy in the country. Based on historical and comparative analysis, and drawing from the experiences of party and electoral politics in Nigeria’s Second and Fourth Republics, the paper substantiated the fact that electoral and party politics have impacted negatively on the country’s body politics as no elections conducted in the country within these epochs have been adjudged as credible, free and fair. The paper noted factors such as intra-party squabbles, inter-party violence, negative role of the security agents during election, the bias nature of electoral commission, godfatherism and money politics are germane to the problematic nature of party and electoral politics in Nigeria. On the strength of the debased nature of Nigeria’s party and electoral politics, it was recommended among others, that the political parties should be reorganized on the principle of allinclusiveness rather than exclusion and reoriented from being mere platforms for acquisition of political power to effective institutions that are capable of promoting internal democracy and engendering sustainable democracy in Nigeria’s political landscape.