The panchayat poll later this year in West Bengal will be crucial as it may be seen as an indicator of voting patterns in the next general election of 2019.
"We have clearly said it earlier that we will fight it out alone in the panchayat polls," the Pradesh Congress Committee (PCC) chief told reporters here.
When asked why the Congress had decided not to go with the CPI(M) in the state, Chowdhury said it was the Left party which had arbitrarily broken its alliance with the Congress after the 2016 Assembly polls.
"The rise of the BJP in the state is due to the CPI(M)'s inability to hold on to its own votes. Since the day it broke the alliance with the Congress, the BJP's vote share has been increasing," he said.
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The CPI(M)'s West Bengal unit had forged an alliance with the Congress during the 2016 Assembly polls in a bid to defeat the ruling Trinamool Congress in the state.
As a result, the party's West Bengal unit had entered into an alliance with the Congress for the 2016 election, which ended up pushing the Left to the third position in the state that it had ruled from 1977 to 2011.
The two parties went separately in the by-poll for the Sabang Assembly seat and have fielded their own candidates for the Uluberia Lok Sabha Parliamentary by-poll fixed for January 29.