SELECT COUNT(first_elected) FROM table_name_80 WHERE counties_represented = "baltimore county" AND district = "06.0 6" AND committee = "economic matters"
Berapa jumlah total terpilih pertama yang memiliki negara yang diwakili di Kabupaten Baltimore, distrik 06.0 6, dan komite masalah ekonomi?
CREATE TABLE table_name_80 (first_elected VARCHAR, committee VARCHAR, counties_represented VARCHAR, district VARCHAR)