District Election Officer D Karthikeyan said: "Authorities acted on 141 out of the 145 complaints received. While some of the complaints are genuine, some seem to be made on assumption."
The April 12 RK Nagar bypoll was necessitated due to the death of sitting legislator and former Tamil Nadu Chief Minister J Jayalalithaa.
The bypoll assumes significance against the backdrop of a vertical split in the ruling AIADMK, with supporters divided between its jailed General Secretary V K Sasikala, and expelled leader and former Chief Minister O Panneerselvam.
AIADMK (Amma) candidate and Sasikala's nephew TTV Dinakaran is contesting on "hat" symbol, while AIADMK (Puratchi Thalaivi) has opted for "electric pole" symbol with E Madusudanan as its candidate.
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Karthikeyan said all efforts were being made to ensure free and fair elections in the constituency.
He said each of the 256 polling booths will have four ballot units since there are 62 candidates in the fray.
The Voter Verifiable Paper Audit Trail (VVPAT) will also be available, he added.
CCTV cameras have been installed at major locations and webcasting of the polling process will be done, he said, adding central paramilitary forces' personnel will be deployed at all polling booths.
Chennai Police Commissioner Karan Singha said Rs 7 lakh has been recovered from the constituency and there was no incident of "major violence", especially between the two warring AIADMK factions, reported.