CREATE TABLE table_3624 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

What party represents the district with incumbent matthew clay?
SELECT "Party" FROM table_3624 WHERE "Incumbent" = 'Matthew Clay'
SELECT "Party" FROM "table_3624" WHERE "Incumbent" = 'Matthew Clay'