Matthias Miersch

Matthias Miersch
Matthias Miersch
	Miersch in 2025
Leader of the Social Democratic Party in the Bundestag
	Incumbent
	Assumed office ; 7 May 2025
Preceded by	Lars Klingbeil
General Secretary of the; Social Democratic Party
	Acting
	In office; 8 October 2024 – May 2025
Leader	Saskia Esken; Lars Klingbeil
Preceded by	Kevin Kühnert
Succeeded by	Tim Klüssendorf
Member of the Bundestag ; for Hannover-Land II
	Incumbent
	Assumed office ; 18 October 2005
Preceded by	Horst Schild
Personal details
Born	19 December 1968; Hannover, Lower Saxony, West Germany
Party	SPD (since 1990)
Alma mater	Leibniz University Hannover
Occupation	Criminal defense lawyer; Politician

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Matthias Miersch (born 19 December 1968) is a German criminal defense lawyer and politician of the Social Democratic Party (SPD) who has been serving as Member of the Bundestag since the 2005 German federal election, representing the Hannover-Land II district. Since 2025, he has been chairing his party's parliamentary group.

From 2013 to 2025, was a member of the party's executive board under successive chairpersons Sigmar Gabriel (2013–2017), Martin Schulz (2017–2018), Andrea Nahles (2018–2019), Norbert Walter-Borjans (2019–2021), Saskia Esken (2019–2024) and Lars Klingbeil (2021–2024). On 8 October 2024 Miersch was appointed as provisional secretary general of the Social Democratic Party. After the Scholz cabinet collapsed on 7 November 2024, he led the party's campaign for the 2025 German federal election.