The Parliament of Catalonia was the devolved, unicameral legislature of the autonomous community of Catalonia, having legislative power in regional matters as defined by the Spanish Constitution and the Catalan Statute of Autonomy, as well as the ability to vote confidence in or withdraw it from a President of the Government. Voting for the Parliament was on the basis of universal suffrage, which comprised all nationals over eighteen, registered in Catalonia and in full enjoyment of their political rights. The 135 members of the Parliament of Catalonia were elected using the D'Hondt method and a closed list proportional representation, with a threshold of 3 percent of valid votes—which included blank ballots—being applied in each constituency. Parties not reaching the threshold were not taken into consideration for seat distribution. Additionally, the use of the D'Hondt method might result in an effective threshold over three percent, depending on the district magnitude. Seats were allocated to constituencies, corresponding to the provinces of Barcelona, Girona, Lleida and Tarragona. Each constituency was allocated a fixed number of seats: 85 for Barcelona, 17 for Girona, 15 for Lleida and 18 for Tarragona. The electoral law provided that parties, federations, coalitions and groupings of electors were allowed to present lists of candidates. However, groupings of electors were required to secure the signature of at least 1 percent of the electors registered in the constituency for which they sought election. Electors were barred from signing for more than one list of candidates. Concurrently, parties and federations intending to enter in coalition to take part jointly at an election were required to inform the relevant Electoral Commission within ten days of the election being called.
Election date
The term of the Parliament of Catalonia expired four years after the date of its previous election, unless it was dissolved earlier. The President of the Government was required to call an election fifteen days prior to the date of expiry of parliament, with election day taking place within sixty days after the call. The previous election was held on 19 November 1995, which meant that the legislature's term would have expired on 19 November 1999. The election was required to be called no later than 4 November 1999, with it taking place on the sixtieth day from the call, setting the latest possible election date for the Parliament on Monday, 3 January 2000. The President of the Government had the prerogative to dissolve the Parliament of Catalonia and call a snap election, provided that no motion of no confidence was in process and that dissolution did not occur before one year had elapsed since a previous one under this procedure. In the event of an investiture process failing to elect a regional President within a two-month period from the first ballot, the Parliament was to be automatically dissolved and a fresh election called.
Parties and leaders
Below is a list of the main parties and coalitions which contested the election:
Opinion polls
The table below lists voting intention estimates in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. The "Lead" column on the right shows the percentage-point difference between the parties with the highest percentages in a given poll. When available, seat projections are also displayed below the voting estimates in a smaller font. 68 seats were required for an absolute majority in the Parliament of Catalonia.
