Career in state politics
After joining the Social Democratic Party of Germany (SPD) in 1964, Klose became a member of the Hamburg Parliament (Hamburgische Bürgerschaft) in 1970, where he was vice chairman of his faction. Two years later he became first chairman of the SPD parliamentary group. In October 1973, Klose succeeded Heinz Ruhnau as minister of the interior of Hamburg.[citation needed]
Only a year later, on 12 November 1974, Klose became First Mayor (Erster Bürgermeister) of the Free and Hanseatic City of Hamburg at the age of 37. At the time, he was widely regarded as a leading figure in the left wing of the party.[1] After a party internal argument about the construction of the Brokdorf Nuclear Power Plant, he resigned from his office on 25 May 1981.[citation needed]
Member of the German Parliament, 1983–2013
In the 1983 elections, Klose was elected as a member of the German Parliament, the Bundestag, for the SPD. In this position, he succeeded Herbert Wehner. From 1987 to 1991 he was treasurer of his party (German: Bundesschatzmeister), serving as part of the party's national leadership under chairman Hans-Jochen Vogel.[citation needed]
From 1991 to 1994 Klose served as chairman of the SPD group in the Bundestag, and in this position also leader of the opposition; at the time, he was chosen over two better-known candidates.[2] In his role as opposition leader, he worked with his CDU/CSU counterpart Wolfgang Schäuble on establishing a majority for a landmark 1993 constitutional amendment on tightening the Germany's asylum law, barring entry to thousands of foreigners who arrive in the country each week to seek asylum.[3]
Ahead of the 1994 elections, SPD chairman Rudolf Scharping included Klose in his shadow cabinet for the party's campaign to unseat incumbent Helmut Kohl as Chancellor.[4] During the campaign, he served as shadow minister of defence. Following the party's defeat in the elections, Klose resigned from the group's leadership to make room for Scharping. Instead he was elected one of the vice presidents of the German Bundestag the same year.[citation needed]
In 1998 Klose became chairman of the Committee on Foreign Affairs. From 2002, he served as its vice president, alongside chairman Ruprecht Polenz. From January 2003 Klose also chaired the German-American Parliamentary Friendship Group. Within his parliamentary group, he served on its task force on Afghanistan and Pakistan between 2009 and 2013.[citation needed]
On 16 March 2010, Germany's Minister for Foreign Affairs Guido Westerwelle appointed Klose to succeed Karsten Voigt as the government's coordinator for German-American affairs, a rare case of a senior political appointment not being given to a member of the governing party.[5] He resigned from that position in 2011.[citation needed]
After leaving politics, Klose took up a position as senior advisor to the Robert Bosch Foundation.[citation needed]