The survey gives second place to DMK candidate N Maruthu Ganesh and AIADMK candidate E Madhusudanan third place.
Vishal, the general secretary of the Nadigar Sangam, who Saturday announced his decision to contest the RK Nagar bypolls, is yet to reveal the reason behind his surprise entry into politics.
Media reports state that the actor is expected to file his nomination on Monday and will reveal his reason for contesting this bypoll.
With the ruling AIADMK fielding E Madhusudhanan and CPI-M deciding to support the DMK candidate, the battlelines for RK Nagar by-election have been drawn.
The seat of RK Nagar is vacant following the death of former Tamil Nadu Chief Minister J Jayalalithaa in December 2016, who represented it for two terms.