"I think this understanding between the Left and the Congress (in West Bengal) did not work. We could together get only 35-36 per cent of votes. Somehow, I think the votes might not have got transferred," CPI General Secretary Suravaram Sudhakar Reddy told PTI here.
He termed the outcome in the state as "negative result" and said the Left would have to go in for a serious review of it.
He said the electoral adjustment between the Left and the Congress was a "limited understanding" with a limited purpose of defeating Mamata Banerjee, who today returned to power with a thumping majority.
"That's what we tried but it did not work," Reddy said.
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Asked if he thought it was a mistake to join hands with the Congress, he said he did not think so.
About the landslide victory of the LDF in Kerala over the Congress-led UDF, Reddy said "It's more than expected".
He said he was in Kerala for four-five days during the last leg of campaigning and expected the LDF to get a majority but not a "very big majority".
"But 91 seats... This is quite unexpected, rarely Kerala gives such type of verdict. In fact, Congress, Muslim League and Kerala Congress groups (UDF)...It's a formidable alliance in Kerala," Reddy said.
Reddy said BJP generally got eight to 10 per cent of votes in Kerala in the last few years, but the party would not "advance" and would not play a key role in Kerala politics.
"They (BJP) spent huge amounts of money and polluted socially and politically situation in Kerala," he said.