Berlin's mayor Michael Mueller (R), top candidate of the social democratic SPD party, addresses the audience as (L-R) German Family Minister Manuela Schwesig, German Vice Chancellor, Economy and Energy Minister and SPD leader Sigmar Gabriel and his wife Claudia Mueller (2ndR)look on during their electoral evening in Berlin after a regional election on September 18, 2016 in Berlin. Some 2.5 million eligible voters in Berlin will choose both a new city-state parliament and 12 local district assemblies. / AFP PHOTO / Odd ANDERSENODD ANDERSEN/AFP/Getty Images