[6] Son was defeated by Kang In-sop in the following election by a margin of around 5,000 votes, marking the last time a conservative party candidate won in Eunpyeong A.

[7] In the 2004 election, Lee Mi-kyung of the liberal Uri Party won the seat, securing 51.79% of the vote.

[9][10] Ahead of the 2016 South Korean legislative election, the Democratic Party then led by Kim Chong-in, did not re-nominate incumbent Lee Mi-kyung for the Eunpyeong A constituency.

[15][16] Park won re-election in a landslide in 2020, securing 64.29% of the vote and defeating United Future Party opponent Hong In-jung.

It borders the constituencies of Eunpyeong B to the north, Goyang B to the west, Mapo B to the southwest, Seodaemun B to the south, and Jongno to the east.