CREATE TABLE table_18220 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "Elected" FLOAT, "Status" TEXT, "Opponent" TEXT)

What are the locations where the year of election is 1980?
SELECT "District" FROM table_18220 WHERE "Elected" = '1980'
SELECT "District" FROM "table_18220" WHERE "Elected" = '1980'