The couple’s application for the certificate in Changanassery had been rejected since they could not appear in person.
Chacko had won as a Kerala Congress candidate in the Legislative Assembly elections held in 1970 and 1977.
During the last four decades the constituency was represented by late C F Thomas of the Kerala Congress (Mani). After a long while a state election without their dear 'CF', as he was popularly known, is upon them.
The CPM is now concerned that the CPI might go back on its decision on giving up the Kanjirappally seat.
Krishnakumari, the former Changanassery municipal chairperson and senior CPM leader in the town, had won with a slender margin of 4 votes from Ward No 20 Mannam Nagar.
The Changanassery seat will also be a point of discussion for the entry of Kerala Congress (M) into the LDF fold.
CF Thomas represented the Changaneassery constituency of Kottayam district in Kerala.
While the Azerbaijan company would prepare the design and chart the engineering method to be employed, Uralungal will carry out the construction.
Nitin Babu allegedly hacked Kunhannamma, 55, to death around 10:30 pm on Saturday at their home in Amara, Thrikkodithanam, in Changanassery.
Earlier, Kottayam Medical College superintendent Dr T K Jayakumar had ruled out Coronavirus and Nipah.