CREATE TABLE table_15821 ("District" TEXT, "Counties Represented" TEXT, "Party" TEXT, "First Elected" FLOAT, "Committee" TEXT)

What is the total number of First elected that has a country represented in Baltimore county, a district of 06.0 6, and a committee of economic matters?
SELECT COUNT("First Elected") FROM table_15821 WHERE "Counties Represented" = 'baltimore county' AND "District" = '06.0 6' AND "Committee" = 'economic matters'
SELECT COUNT("First Elected") FROM "table_15821" WHERE "Committee" = 'economic matters' AND "Counties Represented" = 'baltimore county' AND "District" = '06.0 6'