As an astute / correct political Strategy Congress will never declare its Prime Ministerial Candidate in advance as it will wait for the final outcome of the next general elections so that it can do its Arithmetics right !! What do you think ??
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It has been always obvious choice is their strategy.
Do they have any options to choose their leader? Neither their senior most members nor ground level workers nor ghost propagandists in media hv any choice other than the grabbing the bread thorn at them.