CREATE TABLE table_12527 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT)

What is the earliest first elected date of incumbent howard mckeon?
SELECT MIN("First elected") FROM table_12527 WHERE "Incumbent" = 'howard mckeon'
SELECT MIN("First elected") FROM "table_12527" WHERE "Incumbent" = 'howard mckeon'