The Supreme Court of India dismissed a petition seeking a CBI investigation into alleged horse-trading during a Tamil Nadu Assembly trust vote on Friday [1].

The ruling prevents a federal investigation into the legitimacy of the state government's power and rejects a request to impose President’s Rule in the region [1].

The legal challenge focused on irregularities during the trust vote held on May 13, 2026 [2]. Petitioners sought a probe by the Central Bureau of Investigation into claims that legislators were improperly influenced to secure the vote [1], [3].

The court found that the evidence provided was insufficient to justify judicial intervention. The bench said that the claims lacked the necessary factual basis to warrant a high-level criminal inquiry, a decision that upholds the current legislative standing in Chennai [1], [2].

"This writ petition is based on vague, wild, and casual allegations without any material," the Supreme Court said. "We see no ground to entertain this petition" [3].

By refusing to entertain the plea, the court has signaled a high threshold for overturning assembly results through judicial review. The dismissal ensures that the administrative functions of the Tamil Nadu government continue without the disruption of a federal takeover [1], [2].

The Supreme Court rejected a petition asking for a CBI probe into alleged horse‑trading.

This decision reinforces the legal principle that the judiciary will not interfere in legislative proceedings based on speculative claims. By dismissing the petition for lack of material evidence, the court has protected the stability of the Tamil Nadu government and set a precedent against the use of the CBI to challenge trust votes without substantial proof of corruption.