A party must receive either five percent of the national vote or win at least three directly elected seats to be eligible for non-constituency seats in the Bundestag . This rule, often called the "five percent hurdle", was incorporated into Germany's election law to prevent political fragmentation and strong minor parties. The first Bundestag elections were held in the Federal Republic of Germany ("West Germany") on 14 August 1949. Following reunification, elections for the first all-German Bundestag were held on 2 December 1990. The last federal election was held on 22 September 2013.