Despite conservative politician Lee Jae-oh being elected a total of five times in Eunpyeong B, in recent years, the liberal Democratic Party has been dominant in the constituency.

[1] Deputy Speaker of the National Assembly Kim Jae-kwang of the centre-right Reunification Democratic Party was the first member to represent the constituency.

[8][9] On October 22, 2009, Moon Kook-hyun lost his seat after he was found guilty of violating South Korean election law; specifically the political funds act.

[22][23] Despite this, Lee Jae-oh failed to win re-election, being defeated by Kang Byung-won of the liberal Democratic Party who won with 36.74% of the vote.

[26][27] Kim won the general election with 56.95% of the vote, defeating People Power Party challenger Chang Seong-ho by a wide margin.