The Rajya Sabha (meaning the "Council of States") is the upper house of the Parliament of India. Sikkim elects 1 seat and it is indirectly elected by the state legislators of Sikkim, since year 1976. The number of seats, allocated to the party, are determined by the amount of seats, a party possesses during nomination and the party nominates a member to be voted on. Elections in within the state legislatures are held using Single transferable vote with proportional representation.
Source: Parliament of India (Rajya Sabha)
The list is Incomplete.