By-Election Results 2026 Winners Constituency-Wise List: NDA Wins Puducherry, BJP Leads in Assam, Bengal, TVK Ahead in Tamil Nadu

The counting of votes for six by-elections across West Bengal, Tamil Nadu, Assam and Puducherry has started on October 9, 2026, with the results being closely analysed for their political consequences. The contests cover five Assembly constituencies and one Lok Sabha seat, offering an early indication of how political parties are performing following the recent Assembly elections. 

The key constituencies in spotlight include Nandigram and Rejinagar in West Bengal, Dharapuram and Madurantakam in Tamil Nadu, Thattanchavady in Puducherry, and the Nagaon parliamentary constituency in Assam. The Election Commission of India is publishing constituency-wise counting updates on its official results portal. 

West Bengal By-Election: BJP Faces Challenge in Nandigram and Rejinagar

In West Bengal, the Nandigram by-election became necessary after Chief Minister Suvendu Adhikari chose to retain Bhabanipur, having won both constituencies in the 2026 Assembly elections. The contest has fuelled attention because of Nandigram's political importance and its association with major electoral battles in the state.

BJP candidate Hasirani Rath is contesting the seat against Congress candidate Milan Pradhan. Meanwhile, Rejinagar went to a by-election after Aam Janata Unnayan Party founder Humayun Kabir vacated the constituency to retain Naoda, another seat he had won in the Assembly elections. His son, Golam Nabi Azad, is among the candidates contesting Rejinagar.

Both constituencies recorded high voter turnout, with Nandigram registering 80.89% and Rejinagar approximately 80.08%. Opposition parties casted allegations of electoral irregularities and intimidation during voting, while election officials described voting as largely peaceful. 

Tamil Nadu Bypolls 2026: TVK Leads in Dharapuram and Madurantakam

Tamil Nadu's bypolls are being closely watched as an early electoral test for Chief Minister C Joseph Vijay and his party, Tamilaga Vettri Kazhagam (TVK). The elections in Dharapuram and Madurantakam followed the resignations of AIADMK legislators who subsequently joined TVK.

Both constituencies reported strong voter participation. Madurantakam recorded 86.26% turnout, while Dharapuram registered 80.30%. Early counting trends witnessed TVK candidates leading in both seats, although the final results remain subject to the Election Commission's official declaration. 

Puducherry By-Elections 2026: AINRC Wins Thattanchavady

In Puducherry, All India N.R. Congress (AINRC) candidate Ashok Anand clinched the Thattanchavady Assembly by-election with more than 13,000 votes. The seat became vacant after Chief Minister N Rangasamy chose to retain Mangalam, where he had also triumphed in the Assembly elections.

Thattanchavady saw a voter turnout of 80.81%, lower than the 87.20% registered during the April Assembly elections. The result is crucial for the AINRC-led National Democratic Alliance government in the Union Territory. 

Assam Bypolls 2026: BJP Leads in Nagaon 

Assam's Nagaon Lok Sabha constituency witnessed a three-way contest involving BJP candidate Devasish Sharma, Congress nominee Sibamoni Bora and All India United Democratic Front chief Badruddin Ajmal.

The by-election followed Pradyut Bordoloi's departure from Congress and his subsequent victory from the Dispur Assembly constituency. Nagaon recorded a turnout of 76.19%, with approximately 19.05 lakh electors eligible to vote.

Early counting trends showed BJP's Devasish Sharma leading, but the final result will determine which party secures the parliamentary seat. 

Where to Check Official Bypolls 2026 Results

Voters can follow constituency-wise trends and declared results through the Election Commission of India's official portal: results.eci.gov.in.