CREATE TABLE table_20297 ("#" FLOAT, "Advocate # 1" TEXT, "Advocate # 2" TEXT, "Root of All Evil" TEXT, "Poll winner" TEXT, "Original air date" TEXT)

Name the poll winner for march 19, 2008
SELECT COUNT("Poll winner") FROM table_20297 WHERE "Original air date" = 'March 19, 2008'
SELECT COUNT("Poll winner") FROM "table_20297" WHERE "Original air date" = 'March 19, 2008'