"We will decide on the basis of policies and programmes... because mere coming together does not mean (Opposition) unity, it's not about arithmetic only. And I think there should be an alternate government, a secular government (in 2019).
"We are not saying that we will join hands with anybody. All that I want to raise is that we will work for forming an alternate government against the government of the communal forces," Yechury said.
Yechury, who recently had a meeting with Bihar Chief Minister and JD(U) President Nitish Kumar, said though there was a talk on the recent 'Maha Gathbandhan' (Grand Alliance) experiment in Bihar which kept the BJP out of power, "don't look for a pre-designed answers".
"So, we have told him (Nitish) that the answer is also, in the past we have seen, the 1996 situation. That is also an answer. Our history will tell you," he said while stressing that the Left parties, on their own, would have to play a decisive role in this.
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"There is already a lot of disgruntlement with the Modi government's policies, including demonetisation. We have to see how this disenchantment is channelised to ensure that an alternative secular combination emerges," the CPI(M) leader said.
Asked about forging ties with the Congress or the
Trinamool Congress to keep the BJP out, Yechury said there were no "pre-designed" answers available in electoral politics and parties have to respond on the basis of what results the people throw up in the polls.
"Let us see what sort of a situation comes up... We will take the call depending upon what sort of situation comes up. But lot of water will flow through the Ganga till 2019," he said.
Hitting out at the Modi government for its 'anti-people' policies and the alleged practice to bypass Parliament, the CPI(M) leader questioned the Prime Minister's commitment towards parliamentary democracy, accusing him of "manipulating" the system to avoid Rajya Sabha where the ruling NDA is in minority.
"We, the people of India, (the opening words of Constitution)...Means what? (That) the government is accountable to Parliament. The Parliament is accountable to the people. That is the linkage. If you break that at the level of Parliament, you break the link," he said.
Yechury said Modi was "not being accountable to and manipulating" parliamentary democracy. "One day, the Prime Minister came to Parliament and we had a good debate on demonetisation in Rajya Sabha. After that he vanished.
Castigating the government over issues concerning Dalits and scheduled castes and tribes, Yechury flagged the issue of abolition of the Planning Commission and the Five Year Plans which meant that the sub-plans for SCs and STs have "virtually ceased to exist".
As a result, he said, huge amounts that were to be sanctioned for the SCs and STs are not sanctioned now.
"The current union budget allocates a meagre 2.44 per cent of the total budgetary outlay for the welfare of SCs and a minuscule 1.48 per cent for the welfare of STs," he said, adding that earlier, the sub-plans for SCs and STs were to be allocated in terms equivalent to their percentage in the total population.
He also accused the prime minister of making a "straightforward" appeal aimed at "communal polarisation" of voters during the ongoing Uttar Pradesh assembly poll campaign.
Yechury alleged that Modi was leading BJP's "fork-tongued" campaign for the UP polls, in which, while the PM was talking about farmers' debt waivers, other BJP leaders at the same time harp on Ram temple issue.