With these wins the DMK's total tally in the state assembly goes up by three to 98 and that of Congress to 36.
The tally of other major parties in the 235 seat Tamil Nadu assembly are: AIADMK 57 (after expulsion of S.Ve. Shekher), PMK 18, Communist Party of India - Marxist nine, Communist Party of India six, MDMK three, DMDK one, Independents two (including S.Ve.Shekher), VCK two, Nominated one, Speaker - one, Vacant - one.
There were a couple of firsts in the by-polls apart from the boycott call by AIADMK.
This is the first time when all the constituencies that went to polls were monitored by the Election Commission via web camera.
Poll officials were also given mobile phones to send SMS to the Election Commission at regular intervals on polling percentage.