CREATE TABLE table_75384 ("Polling Firm" TEXT, "Date" TEXT, "PSD - PC" TEXT, "UDMR" TEXT, "Elena B\\u0103sescu" TEXT, "Others" TEXT, "Undecided" TEXT)

What was the UDMR for 18-22/04/2009?
SELECT "UDMR" FROM table_75384 WHERE "Date" = '18-22/04/2009'
SELECT "UDMR" FROM "table_75384" WHERE "Date" = '18-22/04/2009'