Power sharing is necessary in a democracy for the following reasons:
1. Reduces conflict among social groups: Power sharing helps reduce the possibility of conflict between different religious, linguistic, and ethnic groups. Social conflict often leads to violence and political instability.
2. Ensures political stability: Imposing the will of the majority over others may seem attractive in the short run, but in the long run it undermines national unity. Tyranny of the majority is harmful even to the majority itself.
3. Spirit of democracy: Power sharing is the very spirit of democracy. Democratic rule means sharing power with those affected by its exercise. People have a right to be consulted on how they are governed.
4. Legitimate government: When citizens participate in governance, they acquire a stake in the system, making the government more legitimate and accountable.
5. Prudential and moral reasons: Prudentially, power sharing produces better outcomes; morally, sharing power is valuable in itself as it respects every citizen's voice.
Source: Chapter 1 — Power Sharing, "Why power sharing is desirable?" and "Forms of power sharing"
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