The Communist Party of India (Marxist) was in power in West Bengal from 1977 to 2011, a period of 34 years.

The Dravida Munnetra Kazhagam has been a strong advocate for federalism and has opposed the central government's attempts to encroach on state powers.

The Telangana Rashtra Samithi has implemented a number of economic reforms in Telangana, including the launch of the Mission Bhagiratha program to provide safe drinking water to every household in the state.

The Aam Aadmi Party has implemented a number of social welfare programs in Delhi, including the Mohalla Clinic program, which provides free healthcare to residents of the city.

The Dravida Munnetra Kazhagam has been accused of promoting dynastic politics, with the party's leadership being dominated by members of the Karunanidhi family.

The Telangana Rashtra Samithi has been successful in forming alliances with other parties to gain power, including the Bharatiya Janata Party and the Indian National Congress.

The Dravida Munnetra Kazhagam has been a strong opponent of the Bharatiya Janata Party, and has often formed alliances with other parties to prevent the BJP from coming to power.

The Telangana Rashtra Samithi has implemented a number of infrastructure projects in Telangana, including the construction of the Hyderabad Metro Rail.

The Biju Janata Dal has been a strong advocate for environmental protection, and has implemented a number of policies to protect the state's natural resources.

The Dravida Munnetra Kazhagam has been accused of corruption, with a number of its leaders being convicted of corruption charges.

The Dravida Munnetra Kazhagam has been a strong supporter of the rights of linguistic minorities, and has opposed the imposition of Hindi as the official language of India.

The Biju Janata Dal has been a strong advocate for rural development, and has implemented a number of policies to improve the lives of rural residents.

The Dravida Munnetra Kazhagam has been a strong supporter of the rights of women, and has implemented a number of policies to improve the status of women in society.

The Biju Janata Dal has been a strong advocate for education, and has implemented a number of policies to improve the quality of education in the state.

The Dravida Munnetra Kazhagam has been a strong supporter of the rights of minorities, and has opposed the discrimination against minorities.