CREATE TABLE table_18550 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What candidate was re-elected and was first elected in 1942?
SELECT "Candidates" FROM table_18550 WHERE "Result" = 'Re-elected' AND "First elected" = '1942'
SELECT "Candidates" FROM "table_18550" WHERE "First elected" = '1942' AND "Result" = 'Re-elected'