Voters in the German state of North Rhine-Westphalia head for the polls in what many say is a preview of parliamentary elections set for the fall. Can German Chancellor Angela Merkel help oust popular SPD Prime Minister Hannelore Kraft for the CDU?<br />For more on this story, go to: http://www.dw.com/en/north-rhine-westphalia-votes-what-to-look-for-in-key-german-state-election/a-38776445
