According to Pakistan's 1973 Constitution, the federation of Pakistan comprises four provincial units, Balochistan, Khyber Pakhtunkhwa, Punjab and Sindh. Each provincial unit has its own elected legislative body called a provincial assembly that sits in the provincial capitals. A provincial cabinet is selected from among the members of the provincial assembly and is headed by the Chief Minister who is elected by the provincial assembly from among its members. Legislative powers are shared between the federal and provincial governments which is generally more suitable for large countries like Pakistan because provincial governments can be more responsive to the needs of citizens than a centralized government. The federal legislative list provided in the fourth schedule of the Constitution bifurcates the legislative powers. All matters other than those mentioned in the federal list fall in the legislative powers of the provinces.
Seat allocation by provincial assemblies
The number of seats in each provincial assembly is based on the population of the respective province and explained in the Constitution. In addition to the general seats, there are reserved seats for women and non-Muslims. The table below shows detail of seats in each province for which candidates will be contesting the General Election, 2018*.| Description | Balochistan | Khyber Pakhtunkhwa | Punjab | Sindh |
| General seats |
51 |
99 |
297 |
130 |
| Women |
11 |
22 |
66 |
29 |
| Non-Muslims |
3 |
3 |
8 |
9 |
| Total |
65 |
124 |
371 |
168 |
| Description |
General seats |
Women |
Non-Muslims |
Total |
| Khyber Pakhtunkhwa |
115 |
26 |
4 |
145 |
Powers and functions of assemblies
According to the Constitution, the provincial assemblies are responsible for the following:- Electing the Speaker, Deputy Speaker and Chief Minister.
- Acting as the electoral college for the election of the President of Pakistan and senators of the respective province.
- The provincial assembly is empowered to make laws for the province with respect to criminal law, criminal procedure, evidence and any matter not enumerated in the Federal Legislative List.
- It cannot, however, make any law that is repugnant to the injunctions of Islam as laid down in the Holy Quran and the Sunnah, which is repugnant to any provision of the Constitution, inconsistent with a federal law, violates or contravenes any fundamental rights or is not in consonance with the Principles of Policy.
- Financial accountability like, legislating spending, including passing the annual and supplementary budgets of the provinces.
- Overseeing the government.
- According to the 18th amendment, provinces are now granted power and autonomy to establish local government systems and transfer political, administrative and financial responsibility and authority to elected representatives. It also increased the administrative and financial autonomy of the provinces.