Havern [1] attended Harvard where he played on the hockey team from 1970 to 1972.

[2] Havern served as an Arlington Selectman from 1978 to 1986, and as a State Representative from 1987 to 1991.

He resigned on August 22, 2007 to join the legal strategies lobbying firm Mintz Levin, as the president of its Massachusetts Government Relations Practice.

The Fourth Middlesex District includes the towns of Arlington, Billerica, and Burlington.

It also contains six of eleven precincts in Lexington, and six of seven wards in the City of Woburn.