The general election started Monday.
"This is most important election of our (country's) history and I would want everyone to go and vote," Madhavan said at an event here.
"This is the biggest responsibility you can show as an aam aadmi (common man) and I am not talking about any political party here, I am talking about common man.
"If you love your country, then do vote. Don't sit at home that day and enjoy. Let your voice be heard by the entire nation, world," he added.
Besides him, various other Bollywood celebrities like Sidharth Malhotra, Ranbir Kapoor and Aamir Khan have been appealing to citizens to cast their vote.