Langkawi MP Dr Mahathir Mohamad has said that he believed that Umno MPs would be taking a risk by switching allegiance and supporting PKR president Anwar Ibrahim's bid to become prime minister.

In an interview with Utusan Malaysia published today, Mahathir said should Umno MPs switch sides, it would cause the Perikatan Nasional government to collapse and there would still be no guarantee that Anwar could form a new government.