CREATE TABLE table_18555 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What party does the incumbent from the Ohio 7 district belong to?
SELECT "Party" FROM table_18555 WHERE "District" = 'Ohio 7'
SELECT "Party" FROM "table_18555" WHERE "District" = 'Ohio 7'