Just because you against the deal does not mean the Congress is on the wrong side of national sentiment and vice versa.
However, a UPA win or loss is a proxy indicator where public sentiment lies. Politicians have the uncanny knack to smell where the public sentiment lies. If they gravitate to the UPA, it maybe that they perceive that it lies the UPA way and vice versa.
The deal cannot be dead until and unless the UPA loses the vote. Certainly it is only the naive who would still consider the deal as dead if the UPA wins