compatible with the legislator's will of ensuring a regionally balanced composition of the Bundestag. Nevertheless, one consequence of the overhang seats is the paradoxical possibility that a party may receive more seats in the Bundestag by receiving fewer second votes in certain states, or fewer seats if they receive more votes. On July 3, 2008, the Federal Constitutional Court declared the possibility of this so-called "negative vote weight" () to be unconstitutional, and reforms were implemented in May 2013 that sharply reduced this possibility. Discussions about the implementation of a majority voting system By the end of 1955 the CDU/CSU (political union of the parties of the Christian Democratic Union and the Christian Social Union) together with the German party () brought forward a first draft outlining a possible majority voting system. According to this draft 60 percent of the mandates were supposed to be determined by majority votes and only 40 percent according to proportional representation. Adenauer's attempt to end the CDU/CSU's dependence on the FDP (the Liberal Democratic Party) as well as to limit the SPD's (the Social Democratic Party) prospects of getting elected was unsuccessful. When the first Grand Coalition (1966–1969) took office, there were strong tendencies within both major parties, CDU and SPD, to abandon proportional representation which had existed/had been applied since the foundation of the German Federal Republic in 1949. Instead, they suggested implementing the majority vote system. These plans were even part of the coalition agreement. The smaller FDP which has no chance of winning the majority in an election district, protested because the implementation of this voting system would have threatened its further existence. Ultimately, however, the introduction of the majority vote system failed because large parts of the SPD were convinced that it would not have meant better prospects of power. Paul Lücke (CDU), Federal Minister of the Interior, resigned from office on April 2, 1968. Since then there have been no more attempts to introduce the majority vote system in Germany. Forecast The paradoxes which occur with the largest remainder method are avoided by the recent introduction of the Sainte-Laguë method. The difficulty of "negative vote weight" (where a voter's choosing to vote for a party makes it less likely that that party will gain seats in parliament) still remain possible. But German lawmakers adopted reforms in May 2013 that sharply reduce this possibility, following a July 2008 decision of