The electoral law allowed for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates.
Parties and federations intending to form a coalition ahead of an election were required to inform the relevant Electoral Commission within ten days of the election call, whereas groupings of electors needed to secure the signature of at least one percent of the electorate in the constituencies for which they sought election, disallowing electors from signing for more than one list of candidates.

Below is a list of the main parties and electoral alliances which contested the election:
The Spanish Socialist Workers' Party (PSOE), United Left (IU), The Greens (LV), Nationalist and Ecologist Agreement (ENE) and Republican Left of Catalonia (ERC) formed the Ibiza and Formentera in the Senate alliance for the Senate election.
The electoral law allowed for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election were required to inform the relevant Electoral Commission within ten days of the election call, whereas groupings of electors needed to secure the signature of at least one percent of the electorate in the constituencies for which they sought election, disallowing electors from signing for more than one list of candidates.
Below is a list of the main parties and electoral alliances which contested the election:
The Spanish Socialist Workers' Party (PSOE), United Left (IU), The Greens (LV), Nationalist and Ecologist Agreement (ENE) and Republican Left of Catalonia (ERC) formed the Ibiza and Formentera in the Senate alliance for the Senate election.
1996 Spanish general election