This study examined the role of mass media in conflict escalation and resolution during Nigerian elections. It tested three null hypotheses that stated that there was : no significant mass media influence on the perception and behaviour of the electorate and the candidates, no significant mass media contribution to the escalation or de-escalation of electoral violence and conflicts, and no significant effectiveness of the mass media in promoting peace, dialogue and reconciliation among the stakeholders in the electoral process. The study adopted descriptive research design and used a questionnaire to collect data from 200 undergraduate students from the Departments of Mass Communication and Political Science in four public universities in Lagos State, Nigeria. The data were analysed using Chi-square statistical method at a significance level of 0.05. The results showed that all the null hypotheses were rejected, meaning that the mass media had a significant role in influencing, contributing and promoting conflict escalation and resolution during Nigerian elections. The study concluded that the mass media should be more responsible, ethical and professional in their coverage and reportage of electoral issues, and that they should use their platforms to educate, enlighten and empower the citizens to participate peacefully and constructively in the democratic process.