CREATE TABLE table_28876 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

In what district was the incumbent Charles A. Wickliffe?
SELECT "District" FROM table_28876 WHERE "Incumbent" = 'Charles A. Wickliffe'
SELECT "District" FROM "table_28876" WHERE "Incumbent" = 'Charles A. Wickliffe'