What happens after a by-election result?

In order, after the last round

1. Counting ends; a recount can be asked for. A candidate or an agent can ask the Returning Officer in writing to recount all or some of the votes, giving the grounds. The officer may refuse a request that looks frivolous or unreasonable (Rule 63 of the Conduct of Election Rules, 1961). This is possible only before the result is declared.
2. The Returning Officer declares the result. The candidate with the most valid votes is declared elected (Section 66 of the Representation of the People Act, 1951, and Rule 64). The Election Commission's results site then shows the declared result.
3. The winner gets a certificate of election. After the declaration the Returning Officer grants it in Form 22 (Conduct of Election Rules, 1961).
4. The new MLA takes an oath. Before taking a seat in the Assembly, a member must make an oath or affirmation before the Governor or a person the Governor appoints (Article 188). A member who sits or votes before that pays a penalty of ₹500 for each day (Article 193). The Constitution sets no date for it, and this page does not guess one; it follows the official announcement.
5. The term lasts as long as the Assembly. Unless the Assembly is dissolved sooner, the winner sits until 10 May 2031.

Challenging a result: the election petition

Once a result is declared, a recount can no longer be asked of the Returning Officer. The one way to challenge the result is an election petition, and no election can be questioned any other way (Section 80).

• Who can file. Any candidate at that election, or any voter of that seat (Section 81).
• Where. In the High Court; in Tamil Nadu, the Madras High Court.
• When. Within 45 days of the date the winner was declared elected. The Act has no way to extend this (Section 81).
• On what grounds. Section 100 lists them: the winner was not qualified to stand; the winner or the winner's election agent committed a corrupt practice; a nomination was wrongly rejected; or, if it materially affected the result, a nomination was wrongly accepted, votes were wrongly received or rejected, or the Constitution, the Act or the rules were broken.
• How long it takes. The High Court must try it as quickly as possible and aim to finish within six months of the petition being presented (Section 86(7)).
• What the court can do. Dismiss the petition, declare the election void, or in some cases declare another candidate elected (Section 98).

Madurantakam and Dharapuram

The votes are counted on 9 October 2026.The votes were counted on 9 October 2026. The 45 days run from the day each winner is declared elected; for a declaration on 9 October 2026, the last day is 23 November 2026. The winners appear on the results page once the Election Commission declares them.

Why petitions matter in Tamil Nadu in 2026

Election petitions against the April 2026 results are why five seats have no by-election date. On 10 July 2026 the Madras High Court barred the Election Commission from calling by-elections there, on a public-interest petition arguing that a by-election while petitions are pending could leave two people with a claim to one seat. No petition was pending against the April results in Madurantakam and Dharapuram, so the Commission scheduled those two (reports).

More: why only 2 of 7 seats vote · when is the next election · the by-election hub · who is the Speaker.