Who was the incumbent that retired to run for the senate democratic hold?
CREATE TABLE table_name_82 (
    incumbent VARCHAR,
    result VARCHAR
)
SELECT incumbent FROM table_name_82 WHERE result = "retired to run for the senate democratic hold"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Who was the incumbent that retired to run for the senate democratic hold? ### Input: CREATE TABLE table_name_82 (
    incumbent VARCHAR,
    result VARCHAR
) ### Response: SELECT incumbent FROM table_name_82 WHERE result = "retired to run for the senate democratic hold"