Rules of Engagement

  • If Dean Del Mastro is your MP, introduce yourself as a constituent—MPs tend to put much more stock in letters from inside their districts.
  • Be brief and respectful.
  • Try to ask a specific question.

Paper & Voice


Dean Del Mastro
House of Commons
Ottawa, ON
K1A 0A6

(No postage required!)

Phone: 613-995-6411
Fax: 613-996-9800

1600 Lansdowne St W
, Unit 3 (Main Office)
Peterborough, Ontario
K9J 8M7

Phone: 705-745-2108
Fax: 750-741-4123


You can reach the office of Dean Del Mastro at