Parties entered the final phase of electioneering on Monday with on-vehicle campaigns, family meets and booth-level rallies. Top leaders are expected to appear in the constituency in the next three days. lDF’s star campaigner VS Achuthanandan started his last leg of campaigning on Monday while senior Congress leader AK Antony is expected to visit Aruvikkara on Tuesday.The by-poll in Aruvikkara was necessitated by the death of sitting member and Assembly Speaker G Karthikeyan of the Congress, who had been representing the constituency (formerly Aryanad) since 1991. The Congress has fielded Karthikeyan’s son KS Sabarinathan as the UDF candidate hoping to cash in on the possible sympathy wave.The lDF candidate for the by-poll is CPI(M)’s former Speaker and former Minister M Vijayakumar, a native of the constituency. The BJP’s candidate is its most reputed and respected figure in the State, former Union minister O Rajagopal.