If the seat is currently empty, can I just be added right now?

No, unfortunately, not according to the Rules of the Kings County Democratic Party. Special election rules don’t apply to County Committee, and your District Leader only has the power to appoint people to vacant seats at the beginning of every two-year County Committee term. But even then, we encourage people to petition for their own seat so that your neighbors have an opportunity to interact with you, rather than being appointed and never getting to meet your neighbors. The best way to get on County Committee is with your own two feet (or however you get around your neighborhood!).