Lee of the conservative Grand National Party received 50.3 percent of the vote, according to an exit poll sponsored jointly by TV stations KBS and MBC.
The next closest candidate, liberal Chung Dong-young, had 26 percent, and independent Lee Hoi-chang was third with 13.5 percent.
The poll of 70,000 people had a margin of error of plus or minus 1 percentage point.
The results were similar to an exit poll by TV station SBS that had Lee winning with 51.3 percent of the vote. YTN news channel's exit poll put Lee on top with 49 percent.
Güncelleme Tarihi: 19 Aralık 2007, 17:10