CREATE TABLE "opinion_polling_for_the_united_states_se" (
  "poll_source" text,
  "dates_administered" text,
  "democrat_dick_durbin" text,
  "republican_steve_sauerberg" text,
  "lead_margin" real
);

Question: Which poll put Dick Durbin at 56%?
SQL: SELECT "poll_source" FROM "opinion_polling_for_the_united_states_se" WHERE "democrat_dick_durbin"='56%';

Question: What is Dick Durbin lead margin in the poll with 59%?
SQL: SELECT "lead_margin" FROM "opinion_polling_for_the_united_states_se" WHERE "democrat_dick_durbin"='59%';

Question: Which poll source has a lead of 17?
SQL: SELECT "poll_source" FROM "opinion_polling_for_the_united_states_se" WHERE "lead_margin"=17;