Which State (class) has a Successor of harry f. byrd, jr. (d)? Question
CREATE TABLE table_66238 (
    "State (class)" text,
    "Vacator" text,
    "Reason for change" text,
    "Successor" text,
    "Date of successor's formal installation" text
)
SELECT "State (class)" FROM table_66238 WHERE "Successor" = 'harry f. byrd, jr. (d)'
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: Which State (class) has a Successor of harry f. byrd, jr. (d)? Question ### Input: CREATE TABLE table_66238 (
    "State (class)" text,
    "Vacator" text,
    "Reason for change" text,
    "Successor" text,
    "Date of successor's formal installation" text
) ### Response: SELECT "State (class)" FROM table_66238 WHERE "Successor" = 'harry f. byrd, jr. (d)'