user: Question: What Republican District had Incumbent First Elected in 2000 then Re-elected?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Results']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Arizona 1', 'Rick Renzi', 'Republican', 2002.0, 'Re-elected']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "Party" = 'Republican' AND "Results" = 'Re-elected' AND "First elected" = 2000.0;