The constitution was approved by the Senate and House of Deputies before being signed by the King.
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The politics of Jordan takes place in a framework of a parliamentary monarchy, whereby the Prime Minister of Jordan is head of government, and of a multi-party system. Jordan is a constitutional monarchy based on the constitution promulgated on January 8, 1952. The king exercises his power through the government he appoints which is responsible before the Parliament.
Information from wikipedia article Politics of Jordan