Politicians can gauge public opinion by looking at?

Public opinion consists of the desires, wants and thinking of the majority of the people. It is the collective opinion of the people of a society or state on an issue or problem. This concept came about through the process of urbanization and other political and social forces. For the first time, it became important what people thought as forms of political contention changed. Democracy requires public opinion because it derives authority from the public.

Explanation:

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abraham lincoln