(L-R) Erwin Sellering, state premier of the German state of Mecklenburg-Vorpommern, Vice Chancellor, Economy and Energy Minister Sigmar Gabriel (SPD) and German Family Minister Manuela Schwesig arrive for a Social Democrats (SPD) party campaign event prior to regional elections on September 2, 2016 in Rostock, north-eastern Germany. Regional elections will be held on September 4, 2016 on German Chancellor Angela Merkel's home turf of Mecklenburg-Western Pomerania, where her Christian Democratic Union (CDU) party is trailing in the polls. / AFP PHOTO / Adam BERRYADAM BERRY/AFP/Getty Images