Electoral processes in many African countries including Nigeria, are faced with the challenges of conducting free, fair, credible and violence-free elections. Political violence has become a stain on Nigerian democracy. This paper therefore examined the impact of political violence on national security in Nigeria. The paper adopted the descriptive analytical approach. This study found out that Political violence in Nigeria is now a stain in our democracy that is now seen as a political structure and strategy for employment during elections and the use of weapons during elections have an aftermath impact on the national security. Consequently, some recommendations were made by the researcher. The Independent National Electoral Commission (INEC) has to take conscious and strategic actions against political violence in the country (Nigeria), due to the fact that action and inaction of the government of the country plays a very important role in either stopping or continuing the menace. Appropriate security network and intelligence should be organized to monitor electoral activities of the country to mitigate incidences of violence. The Independent National Electoral Commission should conduct free, fair and credible elections in Nigeria while the political parties and their candidates should ensure strict compliance with electoral regulations of the country (Nigeria).