As I wrote in The National Interest,
As of 1 am Korea time, Korea’s public broadcaster Munhwa Broadcasting Corporation (MBC) projected the Democratic Party to be on track to win about 174 seats, while the opposition United Future Party (UFP) would win about 109. The target for a super-majority is 180 seats. [Note: The Democratic Party has since been confirmed as winning 180 seats.] Projections leave only about 17 seats for minor parties and independents, a huge drop from the 55 seats won by all third-party candidates in 2016.
The partisan-regional divide was exacerbated. The Democrats dominated the west side of Korea, while the UFP painted the east pink. The Democrats are expected to win nearly 100 of the 122 seats in the Seoul Capital Area, which consists of the city of Seoul, Incheon, and the Seoul suburbs in surrounding Gyeonggi province.
I also made two videos about the election and the TV graphics. The first imagines what American election coverage would be like if the networks used the same kind of graphics:
The second is in Korean: