SEOUL: South Korea's main liberal opposition Democratic Party overwhelmingly led exit polls in parliamentary elections, a survey from local broadcaster JTBC showed Wednesday.

The Democratic Party and its satellite party were projected to secure 168-193 seats, including the directly-contested constituency seats and the proportional representation (PR) slots, Xinhua news agency reported.

The ruling conservative People Power Party and its satellite party were estimated to win 87-111 parliamentary seats.

The quadrennial polls for 300 members of the National Assembly were carried out at 14,259 voting stations across the Asian country to let voters cast ballots for 254 constituency seats and 46 PR slots.