revision preference src: In Bremen, candidates of the Social Democratic Party (Sozialdemokratische Partei Deutschlands, SPD) and The Left (Die Linke) launched a boycott against the project. Right-wing candidates had not been excluded. <SEP> tgt: In Bremen, candidates of the Social Democratic Party (Sozialdemokratische Partei Deutschlands, SPD) and The Left (Die Linke) launched a boycott against the project because right-wing candidates had not been excluded.