CREATE TABLE "opinion_polling_for_the_united_states_se" (
  "poll_source" text,
  "dates_administered" text,
  "democrat_mary_landrieu" text,
  "republican_john_kennedy" text,
  "lead_margin" real
);

Question: On what date was the poll showing John Kennedy with 45% and Mary Landrieu with 38%?
SQL: SELECT "dates_administered" FROM "opinion_polling_for_the_united_states_se" WHERE "republican_john_kennedy"='45%' AND "democrat_mary_landrieu"='38%';

Question: What was the date of the poll from Survey USA that showed a lead margin smaller than 5.5?
SQL: SELECT "dates_administered" FROM "opinion_polling_for_the_united_states_se" WHERE "lead_margin"<5.5 AND "poll_source"='survey usa';

Question: Which organization administered the poll that showed a lead margin of 5.5?
SQL: SELECT "poll_source" FROM "opinion_polling_for_the_united_states_se" WHERE "lead_margin"=5.5;

Question: Which poll shows Democrat Mary Landrieu with 53% against Republican John Kennedy?
SQL: SELECT "republican_john_kennedy" FROM "opinion_polling_for_the_united_states_se" WHERE "democrat_mary_landrieu"='53%';