[1] The Left Democratic Front (LDF) is a coalition of centre-left to left-wing political parties, led by the Communist Party of India (Marxist) (CPIM).

The United Democratic Front (UDF) is an alliance of centrist to centre-left political parties led by the Indian National Congress (INC).

The National Democratic Alliance (NDA) led by Bharatiya Janata Party (BJP) is a coalition of centrist to right-wing parties.

An alliance of centre-left to left-wing political parties, the LDF is currently in power.

It is a Big tent alliance of centrist to left/ central right political parties in the state, founded by the prominent Congress party leader K. Karunakaran in 1978.