After a string of disappointing elections, German Chancellor Olaf Scholz’s Social Democrats (SPD) finally have something to celebrate after narrowly winning Sunday’s vote in the eastern state of Brandenburg, although they will have an unprecedented challenge in forming a government. The centre-left SPD snatched victory after a remarkable poll run that saw them close a gap of five to six percentage points behind the far-right Alternative for Germany (AfD), which came in second. However, the party which has led the government in the eastern state surrounding Berlin since 1990 may have its most d…