majoritarian

This term is used in a general sense to refer to a system of government where power is concentrated in a single governing party which controls a parliamentary executive having broad constitutional powers to act in the name in the majority.  See also adversarial ; consensus .

A majoritarian electoral system is one which privileges parties which win a majority of parliamentary seats even if they do no gain a majority of votes.  Single member plurality systems , and the alternative vote and second ballot systems are all seen a majoritarian electoral systems.