CREATE TABLE table_58619 ("Polling Firm" TEXT, "Polling Dates" TEXT, "Bob Chiarelli" TEXT, "Alex Munter" TEXT, "Larry O'Brien" TEXT, "Terry Kilrea  ( dropped out ) " TEXT)

What dates and firm does Larry O'Brien have 18% when Terry Kilrea dropped out?
SELECT "Terry Kilrea (dropped out)" FROM table_58619 WHERE "Larry O'Brien" = '18%'
SELECT "Terry Kilrea (dropped out)" FROM "table_58619" WHERE "Larry O'Brien" = '18%'