After a string of bitterly disappointing elections, German Chancellor Olaf Scholz’s centre-left Social Democrats (SPD) finally have something to celebrate after winning Sunday’s vote in the eastern state of Brandenburg. Scholz was set to meet Ukrainian President Volodymyr Zelensky, Turkish President Recep Tayyip Erdogan and Brazilian President Luiz Inácio Lula da Silva in New York on Monday. He’s also likely to comment in detail on the election in Brandenburg, in which his party came first. For much of the summer, opinion polls had shown the far-right Alternative for Germany (AfD) leading in B…