The Delaware Democratic Party (DelDems) serves as the state-level affiliate of the national Democratic Party in Delaware, United States, focusing on electing Democratic candidates, mobilizing voters, and advancing progressive policies at the local, state, and federal levels. Established as part of the broader Democratic movement, the party has played a pivotal role in Delaware's political landscape, particularly since gaining control of the state House of Representatives in 2008. It coordinates campaigns, provides resources to candidates, and engages in grassroots organizing across the state's three counties: New Castle, Kent, and Sussex. The party is headquartered in New Castle County and has been led by various chairs over the years, with recent leadership including Erik Raser-Schramm as chair and Seth Barnes as executive director. DelDems emphasizes issues such as protecting social services, education, non-discrimination protections, and economic development, often bridging urban liberal strongholds in the north with more moderate rural areas in the south.

Historically, the Delaware Democratic Party traces its roots to the early 19th century, aligning with the national party's formation amid debates over representative government in the First State. The party has navigated internal divisions, such as those during the 1972 presidential election when northern liberals supported George McGovern while southern members favored more centrist positions, a dynamic that Joe Biden successfully bridged in his early career. In recent decades, DelDems has solidified Democratic dominance in state politics, maintaining a 26-15 majority in the House after the 2022 elections and expanding to 27-14 in 2024. The organization has faced occasional internal challenges, including debates over national leadership like the 1995 pushback against Chris Dodd's potential DNC role, but it remains a powerhouse in a state known for its small size and significant influence in national elections due to its early primary date.

In the 2024 election cycle, DelDems fielded a robust slate of candidates, including Lisa Blunt Rochester for U.S. Senate, Sarah McBride for Congress, and Matt Meyer for Governor, focusing on priorities like safeguarding Social Security and Medicare, expanding access to healthcare, and promoting bipartisan respect in governance. The party actively uses digital platforms like Twitter (@Deldems) and its website (deldems.org) for outreach, volunteer recruitment, and press releases. While dominant, DelDems has drawn criticism for internal dynamics and occasional controversies, such as statements on national events, underscoring its role in a politically divided environment.