Name the candidates for l. mendel rivers
CREATE TABLE table_1341930_40 (candidates VARCHAR, incumbent VARCHAR)
SELECT COUNT(candidates) FROM table_1341930_40 WHERE incumbent = "L. Mendel Rivers"
### Context: CREATE TABLE table_1341930_40 (candidates VARCHAR, incumbent VARCHAR) ### Question: Name the candidates for l. mendel rivers ### Answer: SELECT COUNT(candidates) FROM table_1341930_40 WHERE incumbent = "L. Mendel Rivers"