CREATE TABLE table_35814 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB)

Which district has joseph t. johnson as an incumbent?
SELECT "District" FROM table_35814 WHERE "Incumbent" = 'joseph t. johnson'
SELECT "District" FROM "table_35814" WHERE "Incumbent" = 'joseph t. johnson'