This is the 91st most frequent Korean word.
더불어민주당
The Democratic Party of Korea.
Here, '더불어민주당' is used as the subject of the sentence, referring to the political party.
더불어민주당은 최근 선거에서 큰 승리를 거두었습니다.
The Democratic Party of Korea achieved a significant victory in the recent election.
Here, '더불어민주당' is used possessively to indicate it as the owner of the policies being discussed.
나는 더불어민주당의 정책에 대해 토론하고 싶습니다.
I want to discuss the policies of the Democratic Party of Korea.
In this usage, '더불어민주당' is mentioned as a part of a group of entities, specifying it as one of Korea's significant political parties.