CREATE TABLE table_29546 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "Elected" FLOAT, "Status" CLOB, "Result" CLOB)

Who was the incumbent for the election in 1978?
SELECT "Incumbent" FROM table_29546 WHERE "Elected" = '1978'
SELECT "Incumbent" FROM "table_29546" WHERE "Elected" = '1978'