user: Question: In which District(s) has a Democrat held office since 1998?
Columns: ['District', 'Incumbent', 'Party', 'Elected', 'Status']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'Felix Grucci', 'Republican', 2000.0, 'Running']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "Party" = 'Democrat' AND "Elected" > 1998.0;