Claim: Bettina Hagedorn, a German politician of the Social Democratic Party, has been a member of the SPD since 1983 and has been deputy state chairwoman of the SPD Schleswig-Holstein since 2007.
Evidence: Bettina Hagedorn (née Siebmann, born 26 December 1955) is a German politician of the Social Democratic Party (SPD). Since 1983 Hagedorn has been a member of the SPD. Since 2007 has been deputy state chairwoman of the SPD Schleswig-Holstein, under the leadership of chairman Ralf Stegner.