"52 per per cent of the 1.27 crore eligible voters cast their votes till 3 PM," a senior official of Delhi Election Commission said.
He said polling has so far been peaceful and there were no reports of any untoward incident.
There were reports of malfunctioning of electronic voting machines (EVM) in some parts of the city but they were rectified, EC officials said.
In 2009 Lok Sabha polls, the overall voting percentage stood at 52.3 per cent, which had increased to 66 per cent in the 2013 Delhi Assembly election.
The Delhi Election Commission had set a target of surpassing the 66 per cent polling figure in the Lok Sabha polls.