A referendum has two different ways <em>veto referendum and legislative referendum</em>. Generally, the latter is being called a <em>legislative referral.
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A legislative referendum is a tool by which the Legislature can submit a change to a vote of the people. It does not require the Governor’s approval.
The supreme law of the land in known as the Constitution of the United states. It contains a bill of rights that can be revised and additions can be.made and repealed.