The first bar chart is a comparison of Indian National Congress (INC) vote bank against total electors & voters polled. For better understanding the delayed election results of 1985 & 1992 were merged with respective years. In 1984, INC have got 12.01 crore votes, which is the highest they have ever got since 2019. From 1984 to 1998, the vote bank of INC was decreasing up to 9.5 crore and it started increase from 1999 till 2019, but there is no remarkable change in vote bank.
The second bar chart is a comparison of total seats won by INC against the total seats contested. In overall there is a considerable downward trend in seats won by INC. The first major drop occurred in 1977 (after the emergency period from 1975 to 1977) and they have retained the numbers in 1980 & 1984 elections. After 1984 the numbers were started going down till 2019.
INC was in power from 1947 to 1996 & 2004 to 2014
1885: Founded by Allan Octavian Hume, Dadabhai Naoroji, Dinshaw Wacha & Womesh Chunder Bonnerjee
1905: Gopala Krishna Gokhale elected as President of INC
1920: INC became the principle leader of Indian Independence movement under the leadership of Mahatma Gandhi
1938-1939: Subash Chandrabose served as President of INC
1951-1966: Jawaharlal Nehru was the party leader
1959: C.Rajgopalachari came out from INC against the domination of Jawaharlal Nehru and started a new party called Swatantra Party(SWP)
1967-1980: Indira Gandhi was the party leader
1967: Charan Singh came out of INC and started a new party called Bharatiya Kranti Dal(BKD) and later in 1977 it merged with Janata party
1969: Biju Patnaik came out of INC and started a new party called Utkal Congress(UC) and later in 1974 it merged with Bharatiya Lok dal(BLD)
1969: When Indira Gandhi was expelled from Congress party, 446 of 705 members walked over to Indira’s side and there was a split, which emerged a new party called Indian national congress (organisation) – INC (O). Later in 1977, it merged with Janata Party(JP)
1974: Charan Singh came out of INC opposing the rule of Indira Gandhi and started a new party called Bharatiya Lok Dal(BLD)
1978: D.Devaraj Urs came out of INC and formed a new party called Indian Congress(Socialist). In 1979 Devaraj joined Janata party. And later in 1986 one section of the party lead by Sharad Pawar merged with INC
1984-1990: Rajiv Gandhi was the party leader
1991-1997: PV Narasimha Rao was the party leader
1996: Narayan Datt Tiwari, Arjun Singh, Natwar Singh & Rangarajan Kumaramangalam came out from INC and formed a new party called All India Indira Congress (Tiwari)-AIIC(T). Later in 1998, it merged with INC, when Sonia Gandhi took over the party.
1998: Sitaram Kesari was the party leader
1999-2013: Sonia Gandhi was the party leader
1999: Sharad Pawar, PA Sangma & Tariq Anwar expelled from INC and they formed a new party called National Congress party(NCP)
2014-2019: Rahul Gandhi was the party leader