โอบามามีผู้ลงคะแนนเสียง 29.9% บันทึกไว้กี่หมายเลข?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many numbers were recorded under Obama when he had 29.9% voters?It is not neccessary to use all the tables.
 table_73221:  "County" [ text]  "Obama%" [ text]  "Obama#" [ real]  "McCain%" [ text]  "McCain#" [ real]  "Others%" [ text]  "Others#" [ real] 
SELECT COUNT("Obama#") FROM table_73221 WHERE "Obama%" = '29.9%'