GERMAN Chancellor Angela Merkel is headed for another hammering at the ballot box at the weekend when voters in the capital Berlin go to the polls to elect a new city government. But while the anti-immigration Alternative for Germany (AfD) party is expected to get into the senate, it is not predicted to perform as well as it did in a vote a fortnight ago in the chancellor's home state of Mecklenburg-Western Pomerania. There it scored 22 percent of the vote, drove Mrs. Merkel's CDU into third place and propelled 18 new MPs into the state parliament. The latest polls show the AfD running at 13 percent - although 41 percent of voters said they are still undecided which way to go.The centre left SPD is currently polling 23 percent, the CDU 18 percent, the Greens 15 percent and the hard-left Die Linke party 14.5 percent. Political pundits are forecasting a coalition of the SPD, the Greens and Die Linke to run the city for the next five years. Currently the city is ruled in a coalition of the SPD and the CDU.Any strong AfD showing in Sunday's election will be another warning shot to Mrs. Merkel of the dangers that lie ahead for her in the general election in the autumn of next year. The AfD has made massive inroads into her traditional voter base because of her open door policy on immigration.Bloody clashes in the eastern city of Bautzen on Wednesday between neo-Nazis and migrants illustrate that her pleas for integration and tolerance are falling on increasingly deaf ears.The AfD is now represented in nine of the 16 state parliaments of Germany and are predicted to enter the national arena next year - at the cost of the CDU.