The Constitutional Court reference article from the English Wikipedia on 24-Jul-2004
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Constitutional Court

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A Constitutional Court is a high court found in many countries which deals primary with constitutional law. Its main authority is to rule on wheter or not challenged laws are in fact unconstitutional, and conflicting with constitutionally established rights and freedoms.

Countries with constitutional courts include:

Many countries do not have constitutional courts, and instead delegate constitutional judicial authority to the Supreme Court.