Germany election special: who will replace Angela Merkel?

Berlin correspondent Derek Scally joins Hugh for a deep dive into the most interesting German federal election in decades, which takes place on Sunday. How did Angela Merkel's centre-right CDU, now under the leadership of Armin Laschet, blow its lead in the election race? And who are the other leaders and parties in contention?<img src="http://feeds.feedburner.com/~r/irish-times-politics/~4/nwL-_JK8xI0" height="1" width="1" alt=""/>