Question: What were the dates administered in the Survey USA poll source where Republican Christopher Reed received 37%?
SQL: SELECT "Dates administered" FROM "2-16751596-3" WHERE "Poll Source" = 'Survey USA' AND "Republican: Christopher Reed" = '37%';

Question: What percentage did Republish Christopher Reed receive when the lead margin was smaller than 16?
SQL: SELECT "Republican: Christopher Reed" FROM "2-16751596-3" WHERE "Lead Margin" < 16.0;

Question: What were the dates administered when the lead margin was smaller than 39 with Republican Christopher Reed at 37% and Democrat Tom Harkin at 53%?
SQL: SELECT "Dates administered" FROM "2-16751596-3" WHERE "Lead Margin" < 39.0 AND "Republican: Christopher Reed" = '37%' AND "Democrat: Tom Harkin" = '53%';

Question: What was Democrat: Tom Harkin's percentage when the poll source was Rasmussen Reports and the lead margin was 14?
SQL: SELECT "Democrat: Tom Harkin" FROM "2-16751596-3" WHERE "Poll Source" = 'Rasmussen Reports' AND "Lead Margin" = 14.0;

Question: What were the dates administered when the lead margin was larger than 14 and the poll source was Research 2000?
SQL: SELECT "Dates administered" FROM "2-16751596-3" WHERE "Lead Margin" > 14.0 AND "Poll Source" = 'Research 2000';