CREATE TABLE table_49517 ("Poll Source" CLOB, "Dates administered" CLOB, "Democrat: Vivian Davis Figures" CLOB, "Republican: Jeff Sessions" CLOB, "Lead Margin" FLOAT)

What is the poll source for Vivian Davis Figures at 29% and a lead margin greater than 27?
SELECT "Poll Source" FROM table_49517 WHERE "Lead Margin" > '27' AND "Democrat: Vivian Davis Figures" = '29%'
SELECT "Poll Source" FROM "table_49517" WHERE "Democrat: Vivian Davis Figures" = '29%' AND "Lead Margin" > '27'