Asom Sonmilito Morcha

Asom Sonmilito Morcha, formerly known as United Opposition Forum,, is a coalition of political parties in the northeastern state of Assam in India. It is the major political alliance in Assam. The alliance is led by Indian National Congress along with several other political parties. Most of the ASOM constituents are members of the Indian National Congress-led Indian National Developmental Inclusive Alliance at pan-India level.

History & Elections

Ten political parties formed a political alliance in the run-up to the 2021 Assam Legislative Assembly election. But only eight of them including Indian National Congress, All India United Democratic Front, Bodoland People's Front, Communist Party of India (Marxist), Communist Party of India, Communist Party of India (Marxist–Leninist) Liberation, Anchalik Gana Morcha and Rashtriya Janata Dal agreed on a seat-sharing arrangement for dethroning the incumbent BJP government. The alliance was unable to defeat the BJP and its allies, but it gained 43.68% of the total votes polled and got 50 seats.
After the election, Bodoland People's Front left the alliance and All India United Democratic Front was expelled by Indian National Congress.
Due to disagreement on seat sharing for Assam Legislative Assembly by-polls in 2024, the opposition parties went ahead, excluding the Indian National Congress.
In November 2025, Indian National Congress and seven other parties formed a new alliance ahead of the 2026 Assam election.

	Year	Party	Symbol	State Leaders	Remarks
1	2021	All India United Democratic Front		Badruddin Ajmal	Expelled
2	2021	Bodoland People's Front		Hagrama Mohilary	Left the alliance
3	2022	Jimochayan Deori People’s Party		Mahesh Deori	Left the alliance to join NDA
4	2023	Liberal Democratic Party (Assam)		Prodyut Bora	Merged with Indian National Congress
5	2024	Janata Dal (United)		Paresh Nath	Left the alliance to join NDA
6	2024	Trinamool Congress		Sushmita Dev	Left the alliance

The president coordinates with the members of currently four membered panel of General Secretaries.