Addressing media, Mariya said the people of Puthuppally have accepted her brother as their own, just like how they treated her father.
CPM leader AK Balan said for the LDF to win Puthuppally would be one of the wonders of the world.
Chandy Oommen and family cast their vote at the booth set up in Georgian Public School here.
A public holiday has been declared for government, semi-government, educational and commercial establishments in Puthuppally constituency.
At the Puthuppally Junction is a neglected memorial that pays tribute to Kuttikkal Kunjappan, who died in the shooting.
All major parties in the fray were engaged in a show of strength on the final day of public campaigning ahead of the bypoll on September 5.
The opposition front has prepared a detailed list of the voters who have passed away and those who have confirmed that they will not be able to come to vote this time.
He said the Congress would never launch a personal attack on anybody and that the culprit must have done it using the party as a front.
CPM state secretary MV Govindan said if the BJP does not secure the votes it had last time, then it is clear that there was an underhand deal.
Ration shops and Maveli stores are stocked with kits to be distributed for the festival that falls on Tuesday.