Incumbent Prime Minister Leopoldo Calvo-Sotelo, which stood in second place in the Madrid list, lost his seat—the only time in recent Spanish history that a sitting Prime Minister seeking re-election as MP was unseated. It was the worst defeat, both in absolute terms and in terms of percentage of seats lost, for a ruling party at the national level in Spain, and one of the worst defeats ever suffered by a governing party in any country at the time, rivaling only with the collapse of Christian Democracy at the 1994 Italian election or the Progressive Conservatives' downfall at the 1993 Canadian election. The PSOE swept the popular vote in nearly all regions of the country—only AP and PNV wins in Galicia and the Basque Country denied them a clean sweep of the entire national territory. They won a majority of seats in every region but Galicia, La Rioja and the Balearic Islands, and obtained an astounding 60% in Spain's most populous region, Andalusia—a feat never to happen again. In Catalonia it obtained a 23-point lead over the second most-voted party, a result that would only be surpassed by the PSOE's own result in the 2008 election. Andalusia and Catalonia would become from that point onwards as the main strongholds of PSOE support, which was to remain the dominant political force in both regions in each general election until 2011. Overall, the PSOE won 202 seats—its best historical performance and the best performance of any party in a Spanish general election. This gave them an overwhelming majority in the Congress, nearly doubling the seat-count of its immediate competitor. The PSOE was also the only party to win seats in every district, the first of only three times since the Spanish transition to democracy that this has happened—the other two being PP results in the 2000 and 2011 elections. The AP-PDP coalition had a major breakthrough, gaining a substantial portion of UCD previous support, displacing it as the main party to the right-of-centre in Spain and becoming the country's main opposition party. Despite only topping the polls in Galicia, its results elsewhere where still considered impressive for a party that, in the 1979 election, had only obtained 6% of the vote and 9 seats. It obtained 107 seats—despite opinion polls predicting that it would be well-below the 100-seat mark—and climbed up to 5.5 million votes. It did not win any seats, however, in the districts of Ceuta and Melilla, which essentially worked under a FPTP system.