"The decision of the party and resolution remains and will not cease to exist unless it is amended or rejected," he said when asked whether the resolution passed by party secretariat in 2015 that "Achuthanandan has anti-party mindset" still exists.
"However, there is no link between his candidature and the party resolution", Vijayan, who was the state secretary of the party when the resolution was passed, told reporters.
It was the party's decision to make Achuthanandan a candidate for the polls and not that of the leader, he added.
The former chief minister had walked out of the state conference held in Alappuzha in February 2015 following sharp differences with party leadership. He had also cited 'serious flaws' in the conduct of the state unit under Vijayan.
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However, the party's central leadership intervened to sort out issues in the state unit.
Vijayan is contesting from Dharmadam in Kannur while Achuthanandan from Malampuzha in Palakkad district.
Meanwhile, another party politburo member and former state minister M A Baby said the core issue in the election is the corruption charges against the UDF government.
"No point in raking up history which is irrelevant now in the polls," Baby said.