มีผู้สมัครกี่คนในการแข่งขันที่ Cecil R. King ดำรงตำแหน่ง?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
How many candidates were there in the race where Cecil R. King is the incumbent?It is not neccessary to use all the tables.
 table_18543:  "District" [ text]  "Incumbent" [ text]  "Party" [ text]  "Result" [ text]  "Candidates" [ text] 
SELECT COUNT("Candidates") FROM table_18543 WHERE "Incumbent" = 'Cecil R. King'