Kurien, whose is among three Rajya Sabha members retiring from Kerala, filed his papers before the Legislature Secretary.
Going by the party strength in the Assembly, the Congress- led UDF could win two of three vacancies. UDF had already allotted one seat to front constituent Kerala Congress (M).
The LDF has proposed CPI(M)'s C P Narayanan as its 'first' candidate and CPI's C N Chandran as the 'second' candidate, paving the way for voting to fill the vacancies.
A former Union minister and Lok Sabha member, Kurien has been in the Rajya Sabha since 2005. He was cleared as the RS candidate by the Congress high command yesterday.