France's housing crisis

As Nicolas Sarkozy enters the presidential election race we take a look at the issues likely to dominate the campaign. The recent cold snap highlighted the acuteness of France's housing shortage. Housing advocates are now fighting to make it a headline election issue. With an estimated 10 million French people affected by a lack of appropriate housing, this issue has the potential to be a vote winner. Catherine Nicholson and Marine Casalis find out who is promising what.