ใครเป็นผู้ชนะในเขต Louisiana 7?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who was the winner in the Louisiana 7 district?It is not neccessary to use all the tables.
 table_1341865_20:  (incumbent [ VARCHAR ] district [ VARCHAR) ]
SELECT incumbent FROM table_1341865_20 WHERE district = "Louisiana 7"