CREATE TABLE table_18582 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

what's the first elected with incumbent being clair engle
SELECT "First elected" FROM table_18582 WHERE "Incumbent" = 'Clair Engle'
SELECT "First elected" FROM "table_18582" WHERE "Incumbent" = 'Clair Engle'