Which all parties are included in UPA?

The United Progressive Alliance (UPA) primarily includes the Indian National Congress (INC) as its leading party, along with several regional and smaller parties. Notable allies have included the Dravida Munnetra Kazhagam (DMK), the Nationalist Congress Party (NCP), and the Rashtriya Janata Dal (RJD), among others. The composition of the UPA can change over time as alliances shift in Indian politics.