/resources/ad_group_criterion.proto 

--- v25/resources/ad_group_criterion.proto  2026-10-26 16:32:22.000000000 +0000
+++ v26/resources/ad_group_criterion.proto  2026-10-26 16:32:28.000000000 +0000
@@ -265,10 +265,15 @@

   // Output only. The primary status reasons for the ad group criterion.
   repeated
-      google.ads.googleads.v25.enums.AdGroupCriterionPrimaryStatusReasonEnum
+      google.ads.googleads.v26.enums.AdGroupCriterionPrimaryStatusReasonEnum
           .AdGroupCriterionPrimaryStatusReason primary_status_reasons = 86
       [(google.api.field_behavior) = OUTPUT_ONLY];

+  // Output only. Indicates whether using this criterion requires setting
+  // Campaign.contains_eu_political_advertising field.
+  optional bool require_eu_political_advertising_declaration = 93
+      [(google.api.field_behavior) = OUTPUT_ONLY];
+
   // The ad group criterion.
   //
   // Exactly one must be set.