Singh gained a seat in the Lok Sabha — which is the lower house of the Parliament of India — in the Indian general elections of 1962. He repeated that success in the elections of 1967 and 1971. He was again elected to the Lok Sabha in 1980 and a further election to that house came in 2009, following an absence from the intervening two Lok Sabhas. His wife had served a term following her victory in the 2004 elections.