He was elected to the Lok Sabha in 1978 as a member of the Shiromani Akali Dal (SAD), a Sikh-centered regional political party.

Chhanga Singh had actively participated in all Sikh morchas, including those of Guru Kal Bagh, Gangsar, Jaitu Nabha, Nankana Sahib, and Duska.

As he was a member of the Lyallpur District Board at the time, his lambardar, which entitled him to a free land holding of 25 acres, was forfeited because of his actions.

[5] After independence, Chhanga Singh settled at Talwandi village in Ludhiana district, and was unanimously elected the sarpanch in 1955 for a decade.

'Iron Man' for his role in early years of Akali politics followed by arrests in all Punjabi Suba morchas, along with his brother Master Dev Raj Singh.

[8] He was inducted as the Minister of State for Development and Animal Husbandry in the Gurnam Singh Ministry, and was also unanimously elected Leader of the Akali Legislature Party in 1967.

On Mr. Mohan Singh Tur's indisposition in April 1977, Jathedar Talwandi was appointed Acting President of the Akali Dal.

He declared that the Akali Dal would cooperate with the newly formed Janata Party but would not merge with it and would remain its separate entity.

Talwandi organized the All India Akali Conference in Ludhiana in the month of October 1978 after 13 Sikhs were killed in a fight between Nirankaris and Akhand Kirtani Jatha followers.

He was released on appeal from the Akal Takhat and Sant Harchand Singh Longowal, dictator of Dharam Yudh Morcha.

[2] As the Punjab state was engulfed in militancy and the Operation Blue Star took place in 1984, all the senior leaders of the Akali Dal were detained in different jails.

His daughter Harjit Kaur Talwandi is serving as the President of the Women's Wing of Shiromani Akali Dal (Sanyukt) in 2022.

He was pronounced dead by the Institute’s chief cardiologist, Gurpreet Singh Wander, DMCH medical superintendent Rajoo Chinna, and the Ludhiana civil surgeon at 11.10 am on 21 August 2014.