CREATE TABLE table_18267 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who are all the candidates vying for Henry B. Gonzalez' seat?
SELECT "Candidates" FROM table_18267 WHERE "Incumbent" = 'Henry B. Gonzalez'
SELECT "Candidates" FROM "table_18267" WHERE "Incumbent" = 'Henry B. Gonzalez'