Nigeria's Bicameral Legislature: Structure, Function, and Challenges

Dec 08, 2025 0

The legislative branch is one of the most powerful bodies of government, responsible for passing laws and shaping government policies. Nigeria operates a bicameral legislature, comprised of the Senate and the House of Representatives, which plays a crucial role in lawmaking, from initiating legislation to overseeing its implementation.

Understanding the legislative process in Nigeria is essential for citizens to actively engage with their representatives, contribute to public discourse, and hold lawmakers accountable. Nigeria as a nation operates a legislature that legislates on behalf of its populace, it is founded on the most fundamental democratic ideas and ethics.

The Nigerian democracy thrives on a system of checks and balances with the National Assembly holding legislative power.

Structure of the National Assembly

The Nigerian federal legislature operates under the 1999 Constitution and consists of two chambers:

The Senate: Often referred to as the “Red Chamber,” consists of 109 Senators, with three representatives from each of the 36 states and one from the Federal Capital Territory.
The House of Representatives: Known as the “Green Chamber,” has a larger membership, currently 360 members. Each state’s representation is based on the number of constituencies, ensuring a broader voice for Nigerians. The House of Representatives is led by the Speaker and Deputy Speaker.

National Assembly Complex, Abuja

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Key Functions of the National Assembly

The 1999 Constitution of Nigeria conferred on the National Assembly the power over Nigeria's National Treasury and issues involving the prosecution of war with another country. The Senate has the unique power to impeach judges and other high officials of the executive, including the federal auditor-general and the members of the electoral and revenue commissions.

Before any bill may become law, it must be agreed to by both the House and the Senate, and receive the president's assent. The following are the key functions of the National Assembly:

Initiating Legislation: Legislators, either Senators or Representatives, introduce bills (proposed laws) for consideration by the National Assembly.
Lawmaking Process: The National Assembly doesn’t just vote yea or nay on bills. Legislators engage in a thorough process that includes debates, reviews, and amendments.
Representation: Legislators act as representatives of the people who elected them. They are expected to consider their constituents’ needs and interests throughout the lawmaking process.
Oversight: Lawmaking isn’t a one-time act. The National Assembly also plays an oversight role. They monitor how the executive branch implements the laws they create.
Budget Approval: The National Assembly is responsible for approving the national budget. This involves allocating resources for various government functions and ensuring proper spending.

The Legislative Process in Detail

The Federal Republic of Nigeria has a clearly defined legislative procedure from which its laws are formulated. This procedure ensures that proposed laws are carefully considered and discussed before becoming nationally enforceable.

A bill is a formal proposal for a new law or a change to an existing one. In the intricate world of lawmaking, a bill serves as the foundation for new legislation. It embodies a proposed law or a significant alteration to an existing one.

These bills can cover a wide range of topics, from regulating businesses to protecting the environment to ensuring social welfare. A Bill is simply defined as a draft of a proposed law. A government bill is a written legislative initiative submitted to Parliament by the government for approval and possibly for amendment before becoming law.

The legislative process involves several stages:

Bill Introduction and First Reading: After the Clerk receives a copy of the Bill, he gives notice to the members of the relevant chamber. At the first reading stage, the Clerk reads the short title of the Bill, provides a brief statement on what the Bill aims to achieve. The purpose of the first reading stage is simply to inform legislators of the Bill introduced.
Second Reading and Committee Stage: During the second reading stage, the merits of the Bill undergo debate and discussion. Following the second reading, the Bill is directed to the relevant chamber’s appropriate Standing Committee(s). During the Committee Stage, the Committee endeavours to enhance the Bill’s value and may conduct public hearings to involve key stakeholders and the public.
Report Stage and Third Reading: The Report Stage and Third Reading commences when the Chairperson of the designated Committee provides a report on the Bill’s progress, after which the chamber, operating as the Committee of the Whole, engages in further deliberations on the Bill. During the third reading stage, the Bill undergoes another reading, and members vote on its passage.
Harmonization and Presidential Assent: The receiving chamber may accept the proposed legislation as presented; in which case it communicates its concurrence without alterations. However, if there are disagreements with the provisions of the Bill from the originating chamber or if amendments are sought, a Harmonisation/Conference Committee must be established independently by the Senate President and the Speaker to reconcile these disparities in the Bill. At this stage, the President must either approve or veto/reject the bill within thirty (30) days of receiving it.

President Tinubu signing a bill into law

Suppose the President vetoes the bill or fails to communicate assent within the specified period; in that case, the National Assembly (NASS) can override the veto with a two-thirds majority vote from both chambers to pass the bill into law.

Challenges and Opportunities for Reform

Despite the obvious low capacity, political interference, and inadequate public participation, there are potential reforms that can enhance the legislative process. Some suggestions that can influence specific reforms when implemented are:

Citizen Input: There could be more opportunities for citizens to provide feedback on proposed legislation.
Timely Action on Bills: Setting deadlines for committee reviews and votes on legislation could help prevent bills from languishing.
Strengthening Oversight: The legislature should more effectively hold the executive branch accountable for its actions.
Greater Autonomy and Transparency: Committees could be given more independence to set agendas and conduct in-depth reviews of bills.

The Role of Women in Nigerian Politics

In Nigeria, men and women have an equal right to participate in public office, which is guaranteed to them by the constitution. Many initiatives have been taken by the Nigerian government to promote the participation of women in politics and public service.

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Despite the challenges faced by women in Nigerian politics, there has been an increasing number of female participation in politics over the years. However, the overall national average for women participation is around 6% for elective and appointive positions which is below the West African sub regional average of 15%. Nigeria ranks the 32nd out of the 35 sub Saharan countries when it comes to representation of women in politics.

Women in Nigerian Politics

Currently, there are a total of 21 women serving in the National Assembly, 8 in the Senate and 13 in the House of Representatives. In total, women make up around 4.47% percent of the National Assembly.

The Forum of Nigerian Women in Politics is an influential group that operates with the goal of empowering women. Women in Nigeria face many barriers to political participation. These include cultural practices, threat of intimidation or violence, high cost of election, inadequacy of willing and educated women, and issues regarding indigeneity.

These women are often given subordinate positions where they are able to change little to nothing or affect decisions in the political society.

Conclusion

Nigeria’s bicameral legislature, comprised of the Senate and the House of Representatives, plays a crucial role in lawmaking, from initiating legislation to overseeing its implementation. Understanding the legislative process in Nigeria is essential for citizens to actively engage with their representatives, contribute to public discourse, and hold lawmakers accountable.

Despite the obvious low capacity, political interference, and inadequate public participation, there are potential reforms that can enhance the legislative process.

ACIOE Associates is an advisory services firm providing solutions in strategy, government relations, regulatory affairs, economic development, advocacy, investment facilitation, policy analysis and strategic intelligence in various sectors. With best-in-class public policy data and real-time notifications, Plural is the tool of choice for top government relations teams in Nigeria.