A two-party system is a party arrangement where two significant political fractions command the administrative aspect. In such form of administration, one of the two parties contains a majority in the government and is ordinarily attributed to as the majority or supervising faction while the other is the minority or opposition body. Besides preventing one-party domination, the two-party system provides;
Security: Two-party systems are more enduring and stable than one party or multiparty systems.
Fairness: The two parties must advance to the center to accomplish votes, so the political bodies tend to be conservative.
Efficiency: Voters have simply to select among two parties.