With imponderables galore, the Congress having its own poll calculations can ill afford even a slight erosion of vote share that the discontent within the party may cause.
The rebel factor puts the party in an unenviable position as it sees itself as being too close to power after cooling its heels in the opposition for about eight long years.
But the discomfort lingers as rebels are remaining in the fray in more than a dozen other constituencies, that has made the Congress leaders redouble their efforts to coax them to "retire" in favour of official nominees.
The Congress rebels are remaining in Bhadravathi, Belgaum Rural, Khanapur, Tarikere, Karwar-Ankola, Kunigal, Srirangapatna, Hanur, Mayakonda, Kampli, Beelagi and Jamkhandi, besides several other constituencies.
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But in a relief to the party, former External Affairs Minister and Chief Minister S M Krishna has plunged into the campaign, ending speculation that he might keep himself away as he was miffed over the issue of ticket distribution.
The Congress is leaving nothing to chance in the backdrop of its hopes of bouncing back to power being rekindled in the recent elections to Urban Local Bodies in which it pushed the ruling BJP to the third spot.