Voters in South Korea are electing a new National Assembly with the governing Saenuri party is hoping to strengthen its position in parliament.
The vote is seen as especially important for President Park Geun-hye, whose time in office has been hampered by legislative gridlock.
The ruling party is aiming to win the three-fifths of seats needed before bills can be introduced and passed by parliament. The party currently holds only a slim majority in the chamber.
Wednesday’s vote allows the ruling Saenuri Party to comfortably regain its majority over a divided opposition, as pollsters predict, it raises expectations the party will take the presidency in 2017, after Park’s single term expires.