Germany's SPD party struggles for momentum

Germany's Social Democrats party have been holding its party conference, hoping to increase their popularity in advance of September's general election. The centre-left party had a brief boost in the polls earlier this year when Martin Schulz came back from decades in Brussels to become party leader. But the so-called Schulz effect wore off. Al Jazeera's Dominic Kane reports from Dortmund. - Subscribe to our channel: http://aje.io/AJSubscribe - Follow us on Twitter: https://twitter.com/AJEnglish - Find us on Facebook: https://www.facebook.com/aljazeera - Check our website: http://www.aljazeera.com/