group. The unified party quickly became a serious force in western Germany for the first time. It comfortably surpassed the electoral threshold in Bremen in 2007, and throughout 2008 won seats in Lower Saxony, Hesse and Hamburg. The "five-party system" in Germany was now a reality in the west as well as the east. A string of electoral successes followed during the "super election year" of 2009. The Left achieved 7.5% in the European elections, confirming their enduring nationwide popularity. Six state elections were held throughout the year, and in each of them the party either surged ahead or consolidated earlier gains. They saw an upswing in Thuringia and Hesse and won seats for the first time in Schleswig-Holstein and Saarland. Oskar Lafontaine ran as the party's lead candidate in Saarland, leading the party to a massive success with 21.3% of the vote. In Saxony and Brandenburg, The Left's vote declined slightly, but it remained the second largest party in both states. 2009 federal election The electoral collapse of the Social Democratic Party in the federal election on 27 September 2009 saw The Left's vote surge to 11.9%, increasing its representation in the Bundestag from 54 to 76 seats, just under half as large as the SPD's parliamentary group. It became the second most popular party in the eastern states with 28.5%, while experiencing a breakthrough in the west with 8.3%. It was the most popular party in Saxony-Anhalt and Brandenburg, and won sixteen direct constituencies, the largest tally by a minor party in history. The Left nonetheless remained in opposition. The Left won seats in the parliament of Germany's most populous state, North Rhine-Westphalia, in the May 2010 election. They now held seats in thirteen of Germany's sixteen states, only absent from three states in the traditionally conservative south. In January 2010, Oskar Lafontaine announced that, due to his ongoing cancer treatment, he would not seek re-election to the party leadership at the upcoming party congress. At the congress in May, Lothar Bisky also chose not to nominate for re-election; Klaus Ernst and Gesine Lötzsch were elected as the party's new leaders. Just a few weeks later, the SPD and Greens invited the Left to support their candidate for the 2010 presidential election, former Federal Commissioner for the Stasi Records Joachim Gauck. They suggested that this was an opportunity for the Left to leave their communist past behind them