THE INFLATABLE PLASTIC BUBBLE SYMBOLIZES THE HUGE DEBT OF THE FEDERAL STATE NORTH RHINE-WESTPHALIA. BY THIS KNOW-HOW ECOLOGY MINISTER OF GERMANY NORBERT ROETTGEN (CHRISTIAN DEMOCRATIC UNION) SET A CHALLENGE TO THE PREMIER OF THIS STATE, SOCIAL DEMOCRAT HANNELORE KRAFT, WHO WILL BE HIS RIVAL IN THE ELECTIONS IN MAY 2012 / REUTERS photo