Answer:
In a single-party state, the ruling political party holds all the power. This party is typically led by its top officials and often a single dominant leader. Power is obtained and maintained through a combination of methods, including political maneuvering, propaganda, control over key institutions such as the military and law enforcement, and often, suppression of opposition parties. While elections might be held, they are often controlled by the ruling party, limiting genuine competition and ensuring the party's continued authority. This concentration of power can lead to effective decision-making but also raises concerns about lack of democratic checks and balances.
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