A constitutional parliamentary democracy is a political system in which parliament selects the government through elections and is limited by constitutional laws. Through this system, the government is responsible to both the people and the parliament. Examples of constitutional parliamentary democracies include Papua New Guinea and Jamaica.
Forms of government, such as parliamentary democracy and constitutional parliamentary democracy, are separated by the laws of their respective constitutions. For example, although Papua New Guinea and Jamaica are governed by officials selected by the parliament, the government is still bound by the laws of the constitution. However, countries such as Bangladesh, Zimbabwe and Australia have adopted parliamentary democracy without the confines of a constitution.
There are many advantages to parliamentary democracies. For example, the parliament selects officials, such as a prime minister or chancellor, as well as his cabinet ministers. Since the parliament selects each executive, as well as the delegates beneath him, the result is a more efficient government. As each of the executives are separately appointed, it is likely for each executive to have different interests in the matter of political affairs, resulting in natural checks and balances. Moreover, elections are not held periodically. Spontaneous elections can force a reorganization of officials if politicians and their decisions become unfavorable.