4)- Senate:

The Senate is a permanent legislative body with equal representation from each of the four provinces, elected by the members of their respective provincial assemblies. There are representatives from the Federally Administered Tribal Areas and from Islamabad Capital Territory. The chairman of the Senate, under the constitution, is next in line to act as president should the office become vacant and until such time as a new president can be formally elected. Both the Senate and the National Assembly can initiate and pass legislation except for finance bills. Only the National Assembly can approve the federal budget and all finance bills. In the case of other bills, the president may prevent passage unless the legislature in joint sitting overrules the president by a majority of members of both houses present and voting. Unlike the National Assembly, the Senate cannot be dissolved by the President.