In many democratic countries now, the government is chosen by people who give their authority to elected representatives. Political parties constitute an important element of modern government.
Nnoli (1986) defined a political party as a group of people who share a common conception of how and why state power should be organised and used. Political parties are more or less organised groups of individuals supporting a political programme and its leaders who aspire to become public officials. In other words, they are group of people who share an ideology (a set of beliefs about human society).
Political party is the major instrument for competing with other groups in periodic election for the purpose of winning and exercising political power. The first and most important aim of each political party is to prevail over the others to get into power or stay in it.