GS2Indian Polity & Constitution·26 Apr 2026·3 min read

The Anti-Defection Law: Understanding the 10th Schedule of the Indian Constitution

Today, seven Rajya Sabha MPs from the Aam Aadmi Party defected to the Bharatiya Janata Party, sparking a significant shift in the political landscape. This development comes amidst ongoing state assembly elections in India, including those in West Bengal, Assam, and Kerala, which are being closely watched for their implications on national politics. The defection of these seven MPs reduces the Aam Aadmi Party's representation in the Rajya Sabha to zero, significantly altering the parliamentary dynamics.

The Anti-Defection Law: Understanding the 10th Schedule of the Indian Constitution
  • The recent switch of seven Rajya Sabha MPs from the Aam Aadmi Party (AAP) to the Bharatiya Janata Party (BJP) has brought the anti-defection law back into focus.
  • This law, enshrined in the 10th Schedule of the Indian Constitution, aims to prevent political defections and ensure stability in the legislature.
  • The 10th Schedule was introduced through the 52nd Constitutional Amendment Act, 1985, and was further amended by the 91st Constitutional Amendment Act, 2003.

The recent switch of seven Rajya Sabha MPs from the Aam Aadmi Party (AAP) to the Bharatiya Janata Party (BJP) has brought the anti-defection law back into focus. This law, enshrined in the 10th Schedule of the Indian Constitution, aims to prevent political defections and ensure stability in the legislature. The 10th Schedule was introduced through the 52nd Constitutional Amendment Act, 1985, and was further amended by the 91st Constitutional Amendment Act, 2003.

  • The 10th Schedule applies to both the Lok Sabha and the Rajya Sabha, as well as to the state legislative assemblies.
  • It stipulates that a member of a House belonging to a political party shall be disqualified if they voluntarily give up their membership or vote against the party's whip.
  • The law also provides for the Speaker or the Chairman of the House to decide on cases of defection, with their decision being final.

How the Anti-Defection Law Works

The anti-defection law has been the subject of several landmark judgments, including the Kihoto Hollohan case (1993), where the Supreme Court upheld the constitutionality of the law but struck down the provision that made the Speaker's decision final. The Court ruled that the decision of the Speaker can be challenged in a court of law. This judgment has had significant implications for the functioning of the anti-defection law, as it ensures that the Speaker's decisions are not arbitrary and can be subject to judicial review.

  • The law has been used to disqualify several MPs and MLAs across the country, with the most recent example being the disqualification of MLAs in the states of Karnataka and Madhya Pradesh.
  • The 10th Schedule has undergone several amendments since its introduction, with the most significant being the 91st Constitutional Amendment Act, 2003, which exempted mergers from the purview of the law.

Grounds for Disqualification

The grounds for disqualification under the 10th Schedule include voluntarily giving up membership of a political party or voting against the party's whip in the House. The law also provides for the disqualification of independent members who join a political party after being elected.

  • The disqualification is decided by the Speaker or the Chairman of the House, who has the final say in the matter.
  • However, as per the Kihoto Hollohan judgment, the Speaker's decision can be challenged in a court of law.

The Role of the Speaker

The Speaker plays a crucial role in the implementation of the anti-defection law. They are responsible for deciding on cases of defection and for disqualifying members who have defected. However, the Speaker's decision is not final and can be challenged in a court of law.

  • The Speaker's role is not limited to deciding on cases of defection but also extends to maintaining order and decorum in the House.
  • The Speaker is also responsible for interpreting the provisions of the 10th Schedule and for ensuring that the law is applied fairly and impartially.

Conclusion

The anti-defection law is an important provision in the Indian Constitution that aims to prevent political defections and ensure stability in the legislature. The law has undergone several amendments since its introduction and has been the subject of several landmark judgments. While the law has been effective in preventing large-scale defections, it has also been criticized for being too restrictive and for limiting the freedom of MPs and MLAs to vote according to their conscience.

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