This is the 2475th most frequent Korean word.
더불어민주당의
"더불어민주당의" means "of the Democratic Party of Korea."
In this sentence, '더불어민주당의' is used as an attributive form to describe '정책' (policies), indicating that the policies belong to the Democratic Party of Korea.
더불어민주당의 정책은 공정한 사회를 만들고자 하는 목표를 가지고 있습니다.
The policies of the Democratic Party of Korea aim to create a fair society.
Here, '더불어민주당의' modifies '대표' (representative), signifying that the representative is affiliated with the Democratic Party of Korea.
지난 행사에서 더불어민주당의 대표가 자신의 의견을 발표했습니다.
At the last event, the representative of the Democratic Party of Korea expressed their opinions.
In this instance, '더불어민주당의' describes '대선 공약' (presidential campaign promises), showing that the promises are associated with the Democratic Party of Korea.