CREATE TABLE table_19070 ("District" TEXT, "Counties Represented" TEXT, "Delegate" TEXT, "Party" TEXT, "First Elected" FLOAT, "Committee" TEXT)

What are the counties represented in District 12.1 12a?
SELECT "Counties Represented" FROM table_19070 WHERE "District" = '12.1 12A'
SELECT "Counties Represented" FROM "table_19070" WHERE "District" = '12.1 12A'