Question: What is the source of the poll that had Republican: Dino Rossi at 46%, Democrat: Christine Gregoire at 50%, and the lead margin was larger than 3?
SQL: SELECT "Source" FROM "2-17538810-7" WHERE "Republican: Dino Rossi" = '46%' AND "Lead Margin" > 3.0 AND "Democrat: Christine Gregoire" = '50%';

Question: What was the percentage for Republican: Dino Rossi when Democrat: Christine Gregoire polled at 53.7% and the lead margin was larger than 7?
SQL: SELECT "Republican: Dino Rossi" FROM "2-17538810-7" WHERE "Lead Margin" > 7.0 AND "Democrat: Christine Gregoire" = '53.7%';