CREATE TABLE table_18292 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

what's the first elected with incumbent being joseph d. early
SELECT "First elected" FROM table_18292 WHERE "Incumbent" = 'Joseph D. Early'
SELECT "First elected" FROM "table_18292" WHERE "Incumbent" = 'Joseph D. Early'