The All India Majlis-e-Ittehadul Muslimeen’s (AIMIM) resurgence in Bihar’s Seemanchal region has emerged as a decisive factor in explaining the Mahagathbandhan’s (MGB) failure to convert Muslim-majority constituencies into electoral victories. In areas where the community forms a substantial proportion of the electorate, the AIMIM’s presence fragmented opposition votes, delivering an unexpected advantage to the National Democratic Alliance (NDA).
This pattern echoes developments from the 2020 Assembly elections, when AIMIM’s entry into Bihar politics proved consequential for the MGB. The party had won five seats that year, largely in eastern Bihar, but four of its MLAs subsequently defected to the Rashtriya Janata Dal (RJD), reducing its legislative footprint.
The Seemanchal sweep
In 2025, AIMIM fielded 25 candidates, concentrating its efforts once again in Seemanchal, where Muslims constitute a substantive proportion of the electorate. The strategy delivered results: the party won or led in six seats, defeating MGB candidates in most contests. Significantly, these six victories emerged from nine seats where Muslims comprised more than 40% of the population.
The table below shows seats contested and won by parties where Muslim proportion of the population was greater than 40% and between 25% and 40% respectively.
(Swipe right to see the full table)
The implications for the MGB were severe. In constituencies with at least 40% Muslim population, concentrated largely in Seemanchal, only the Congress managed to win or lead in a seat (Kishanganj). Neither the RJD nor the CPI(ML)-Liberation, despite their appeals in the region, secured victories in these Muslim-majority areas.
The AIMIM’s spoiler role extended beyond its own victories. In Pranpur, the BJP managed to lead as AIMIM split the opposition vote. In Balarampur, the Lok Janshakti Party (Ram Vilas) benefited similarly, with the anti-NDA vote divided almost equally between AIMIM and the incumbent CPI(ML)-L MLA.
The electoral dynamics shifted dramatically in seats with a relatively higher non-Muslim population, where the Muslim proportion ranged between 25% and 40%. Here, the NDA demonstrated overwhelming dominance, winning 12 of the 13 seats. Only the RJD managed a solitary victory among MGB partners in this category; the Congress and the Left both drew blanks.
The NDA’s success in these mixed constituencies, with the BJP securing six seats, JD(U) five, and LJP(RV) one, suggests that its coalition effectively managed to consolidate the vote in places where the electorate was more diverse.
Logic of fragmentation
The extent of AIMIM’s electoral impact becomes clearer when examining its vote share across constituencies. The party secured more than 15% of the vote in nine constituencies and between 5% and 15% in eight other seats. In a first-past-the-post system, such vote shares, while insufficient for victory in most cases, sufficed to hurt the MGB’s prospects by splitting the anti-NDA vote.
The table below shows the vote share ranges for and seats won by AIMIM and Jan Suraaj Party respectively
This fragmentation had cascading effects. In seats where AIMIM polled strongly but failed to win, it often reduced the margin between the leading NDA candidate and the MGB challenger; in some other cases, it relegated the MGB candidate to third place.
The trends from Seemanchal and other Muslim-heavy areas challenge simplistic notions of a monolithic Muslim vote. The Muslim population in Bihar, particularly in the eastern region, encompasses significant diversities, including linguistic differences and sectarian beliefs. These variations create space for political competition even within communities that parties often treat as monolithic voting blocs.
AIMIM’s campaign explicitly raised the issue of declining Muslim representation among secular parties, arguing that the MGB had failed to adequately accommodate minority aspirations in selecting candidates and prioritising certain policies. This narrative appears to have resonated with sections of the electorate, particularly in Seemanchal, where the party’s organisational presence has only deepened since 2020.
The fragmentation of the minority vote targeted by the MGB thus stems from multiple factors: the diversity within Muslim communities, AIMIM’s strategic positioning as an alternative to secular parties seen to be taking minority votes for granted, and the party’s focused geographical strategy that concentrated resources in constituencies where it could be competitive.
The 2025 Bihar results thus underscore an uncomfortable reality for opposition alliances: consolidation among secular parties alone is insufficient if newer players can successfully appeal to specific communities or regions.
Published – November 14, 2025 05:01 pm IST