diff --git a/app/models/poll/officer_assignment.rb b/app/models/poll/officer_assignment.rb
index 25d1628d5..3ef0ee2db 100644
--- a/app/models/poll/officer_assignment.rb
+++ b/app/models/poll/officer_assignment.rb
@@ -3,6 +3,10 @@ class Poll
     belongs_to :officer
     belongs_to :booth_assignment
 
+    validates :officer_id, presence: true
+    validates :booth_assignment_id, presence: true
+    validates :date, presence: true, uniqueness: { scope: [:officer_id, :booth_assignment_id] }
+
     delegate :poll_id, :booth_id, to: :booth_assignment
   end
 end