Possible Clues:

• Party org
• Pol. party org
• Certain party org.
• Org. once led by Howard Dean
• Party gp. chaired by Tom Perez
• Org. hacked at its Watergate offices
• Org. hacked during the 2016 presidential campaign
• Org. headed by Jaime Harrison
• Sen. Kaine once headed it
• Blue grp