McClain Delaney defeats billionaire Trone in one of the most expensive congressional primaries in history (opens original article in a new tab)

McClain Delaney defeated billionaire Trone in Maryland's 6th District Democratic primary, which was one of the most expensive congressional primaries in history.

• McClain Delaney defeated Trone in Maryland's 6th District Democratic primary.
• The primary was one of the most expensive in congressional history.