What does a political group use to justify its behavior, attitudes, and goals?

"Ideology" justifies their behavior.

"Beliefs" justify their attitudes.

"Election Manifesto" justifies their Goals.

Explanation:

A political party is a political organization that seeks to gain political powers within the government by participating in the electoral elections, Different parties often expressed their different Ideologies, Beliefs and Goals sometimes they also express their goals in written form which is known as Election manifesto.

These things help citizens to select their candidates according to their ideology or beliefs.

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