Chief Election Commissioner V S Sampath said there was time upto March 2015 (to hold the bypoll) and the schedule could be announced after completion of the ongoing summary revision of electoral roll in the state.
"By the first week of January, final publication will be done. After that, election schedule will be announced," he told reporters here at the airport replying to a question on the bypoll.
She has appealed against her conviction in the Karnataka High Court.
The vacancy with effect from September 27 was notified in a Tamil Nadu gazette notification on November 8, which also stated that she is disqualified from contesting elections for ten years.
Opposition parties in the state had criticised the government for "delay" in notifying the vacancy.