Pluralism isn't a valid concept, nor an effective practice, in politics and administration of a state. Pluralism is applicable in social and religious spheres, where versatility of ideas leads to better understandings. In politics, two is obviously better than one, and so is than three. We don't want to confuse the nation with so many good or bad choices to administer the government, because our aim isn't debating things all day long but to get things done. The administration of a state requires practical approaches than making ideas fight each other.