CREATE TABLE table_18230 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Which party does Del Latta belong to?
SELECT "Party" FROM table_18230 WHERE "Incumbent" = 'Del Latta'
SELECT "Party" FROM "table_18230" WHERE "Incumbent" = 'Del Latta'