Who will be the new president of the International Olympic Committee?

The International Olympic Committee (IOC) runs the Olympic Games. It's been said to be the most influential sports organization in the world and the person at the helm - the president - is often tasked with being part sports official, part diplomat and part head of state. Now, seven candidates are vying for the chance to be the next president. The World's Bianca Hillier reports on how their campaigns are going.