CREATE TABLE table_18156 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Results" TEXT, "Candidates" TEXT)

What were the candidates in the district that first elected in 1980?
SELECT "Candidates" FROM table_18156 WHERE "First elected" = '1980'
SELECT "Candidates" FROM "table_18156" WHERE "First elected" = '1980'