BJP is opposing the deal just for the sake of opposing. In fact if they had been on UPA's place, the treaty would have been signed long ago. They are only opposing it because elections are around the corner!
As far as left is concerned, they oppose every thing that is American. Had this deal would be with China and with a clause that India will have to wipe Chinese asses for decades, LEFT would have agreed happily. Because that’s what they do. Look in and around Left governed states, there is a significant rise in Maoist activities and China supported unrests.
Best way is not to vote for Left ... Just go for Congress or BJP (depending upon whose ideology you follow)..
