The article is devoted to the study of the main causes, mechanisms and patterns of political violence in the context of electoral struggle. It has been found that under conditions of significant competition and uncertainty of election results, political elites may choose illegal tools and strategies to maintain power: violence, bribery, fraud, intimidation, and persecution of opponents. It has been proven that the use of violence during the electoral process can significantly distort the voting results, undermine the legitimacy of the elections, and limit the participation of opposition candidates and voters.It has been determined that electoral violence involves the use of organized physical coercion, repression, intimidation, persecution, and destruction of property before, during, and after elections in order to influence the electoral process, voter behavior, and voting results. Such violence becomes an obstacle to holding democratic, fair, free, and competitive elections, hinders the establishment of consensus between government and opposition forces, and can provoke a large-scale armed conflict. It has been proven that the causes of electoral violence include the participants’ desire to influence voting results, increase their advantage over competitors, intimidate disloyal voters, deprive opposition supporters of the opportunity to vote, delegitimize the electoral process, and discredit the government’s ability to maintain security and the functioning of political institutions. As a result, it was found that political competition, unpredictable election results and ethnic polarization of society increase the likelihood of electoral violence, deep political crisis and armed confrontation, which can have critical consequences for political security and the sustainability of democracy.