Newspaper delivery drivers, clerks, dispatchers, security guards, and building services personnel represented by Teamsters Local 628 voted Sunday to authorize a strike against Interstate General Media, the company that owns The Inquirer, the Philadelphia Daily News, and Philly.com.

Approximately 300 union members are working under the terms of their contract that expired Oct. 8. Talks are expected to continue this week, said the union president, John Laigaie. 

- Jane M. Von Bergen