The left parties should not support the deal if they are idealogically different from their point of view. Left lives or leaves for principle. Let us see whether they with draw support or not. Congess is fed up with the threats and a person like PM lost his cool and dared the left to withdraw support.
Only a person like Rajiv Gandhi decline to form a Govt. even he has 195 MPs at his beck and call. Now people with a very little number of MPs' support dream to form Govt.