diff --git a/app/src/main/java/io/github/garemat/lunachron/CharacterState.kt b/app/src/main/java/io/github/garemat/lunachron/CharacterState.kt
index cb33171..154a8a7 100644
--- a/app/src/main/java/io/github/garemat/lunachron/CharacterState.kt
+++ b/app/src/main/java/io/github/garemat/lunachron/CharacterState.kt
@@ -211,6 +211,9 @@ data class OnlineMachinationAttack(
 data class OnlineMachinationEntry(
     val deviceId: String,
     val username: String,
+    // Only sent (as >0) for hosts, whose previousRoundMachinations spans every
+    // past round rather than just the previous one. Defaults to 0 for member
+    // responses, which the server already scopes to a single round.
     val roundNumber: Int = 0,
     val choices: List<OnlineMachinationChoice> = emptyList(),
     val attack: OnlineMachinationAttack? = null
diff --git a/app/src/main/java/io/github/garemat/lunachron/ui/OnlineCampaignDetailScreen.kt b/app/src/main/java/io/github/garemat/lunachron/ui/OnlineCampaignDetailScreen.kt
index 7a91968..3ac46d1 100644
--- a/app/src/main/java/io/github/garemat/lunachron/ui/OnlineCampaignDetailScreen.kt
+++ b/app/src/main/java/io/github/garemat/lunachron/ui/OnlineCampaignDetailScreen.kt
@@ -1281,10 +1281,13 @@ private fun PreviousRoundMachinationsSection(
         val drawCount: Int
     )
 
-    val results = remember(machinations, members) {
+    val results = remember(machinations, members, previousRound) {
         val supportersOf = mutableMapOf<String, MutableList<String>>()
         val sabotageCountOf = mutableMapOf<String, Int>()
+        // Hosts receive every past round's submissions (tagged with roundNumber > 0);
+        // members receive only the previous round, where roundNumber defaults to 0.
         for (entry in machinations) {
+            if (entry.roundNumber > 0 && entry.roundNumber != previousRound) continue
             for (choice in entry.choices) {
                 if (choice.type == "SUPPORT") {
                     supportersOf.getOrPut(choice.targetDeviceId) { mutableListOf() }.add(entry.username)