it is not becuase of individuals. it is purely based on the policies of political parties. At least, these parties like congress, bjp, sp and other regional parties has to learn from Left parties. There is not even a single MP from left parties cross voted. And as CNN IBN reported, not even these so called money / vote traders dare to contact Left MPs for bribing them for cross voting.. Khudos to Left MPs for their firm stand against corruption..
