diff --git a/ietf/doc/tests_ballot.py b/ietf/doc/tests_ballot.py
index e18b2abfd9..034ba6f4b2 100644
--- a/ietf/doc/tests_ballot.py
+++ b/ietf/doc/tests_ballot.py
@@ -806,7 +806,7 @@ def test_clear_ballot(self):
         ballot = create_ballot_if_not_open(None, draft, ad, 'approve')
         old_ballot_id = ballot.id
         draft.set_state(State.objects.get(used=True, type="draft-iesg", slug="iesg-eva")) 
-        url = urlreverse('ietf.doc.views_ballot.clear_ballot', kwargs=dict(name=draft.name,ballot_type_slug=draft.ballot_open('approve').ballot_type.slug))
+        url = urlreverse('ietf.doc.views_ballot.clear_ballot', kwargs=dict(name=draft.name,ballot_type_slug="approve"))
         login_testing_unauthorized(self, "secretary", url)
         r = self.client.get(url)
         self.assertEqual(r.status_code, 200)
@@ -816,6 +816,11 @@ def test_clear_ballot(self):
         self.assertIsNotNone(ballot)
         self.assertEqual(ballot.ballotpositiondocevent_set.count(),0)
         self.assertNotEqual(old_ballot_id, ballot.id)
+        # It's not valid to clear a ballot of a type where there's no matching state
+        url = urlreverse('ietf.doc.views_ballot.clear_ballot', kwargs=dict(name=draft.name,ballot_type_slug="statchg"))
+        r = self.client.post(url,{})
+        self.assertEqual(r.status_code, 404)
+ 
 
     def test_ballot_downref_approve(self):
         ad = Person.objects.get(name="Areað Irector")
diff --git a/ietf/doc/tests_status_change.py b/ietf/doc/tests_status_change.py
index 229390447c..bec48ed4ef 100644
--- a/ietf/doc/tests_status_change.py
+++ b/ietf/doc/tests_status_change.py
@@ -484,7 +484,47 @@ def verify_relations(doc,target_name,status):
         verify_relations(doc,'rfc9998','tobcp' )
         verify_relations(doc,'rfc14'  ,'tohist')
         self.assertTrue(doc.latest_event(DocEvent,type="added_comment").desc.startswith('Affected RFC list changed.'))       
+
+    def test_clear_ballot(self):
+        doc = Document.objects.get(name='status-change-imaginary-mid-review')
+        url = urlreverse('ietf.doc.views_ballot.clear_ballot',kwargs=dict(name=doc.name, ballot_type_slug="statchg"))
+        login_testing_unauthorized(self, "secretary", url)
+        
+        # Some additional setup
+        doc.relateddocument_set.create(target=Document.objects.get(name='rfc9999'),relationship_id='tois')
+        doc.relateddocument_set.create(target=Document.objects.get(name='rfc9998'),relationship_id='tohist')
+        create_ballot_if_not_open(None, doc, Person.objects.get(user__username="secretary"), "statchg")
+        doc.set_state(State.objects.get(slug='iesgeval',type='statchg'))
+        old_ballot = doc.ballot_open("statchg")
+        self.assertIsNotNone(old_ballot)
+        
+        r = self.client.post(url, dict())
+        self.assertEqual(r.status_code,302)
+        new_ballot = doc.ballot_open("statchg")
+        self.assertIsNotNone(new_ballot)
+        self.assertNotEqual(new_ballot, old_ballot)
+        self.assertEqual(doc.get_state_slug("statchg"),"iesgeval")
+
+    def test_clear_deferred_ballot(self):
+        doc = Document.objects.get(name='status-change-imaginary-mid-review')
+        url = urlreverse('ietf.doc.views_ballot.clear_ballot',kwargs=dict(name=doc.name, ballot_type_slug="statchg"))
+        login_testing_unauthorized(self, "secretary", url)
+        
+        # Some additional setup
+        doc.relateddocument_set.create(target=Document.objects.get(name='rfc9999'),relationship_id='tois')
+        doc.relateddocument_set.create(target=Document.objects.get(name='rfc9998'),relationship_id='tohist')
+        create_ballot_if_not_open(None, doc, Person.objects.get(user__username="secretary"), "statchg")
+        doc.set_state(State.objects.get(slug='defer',type='statchg'))
+        old_ballot = doc.ballot_open("statchg")
+        self.assertIsNotNone(old_ballot)
         
+        r = self.client.post(url, dict())
+        self.assertEqual(r.status_code,302)
+        new_ballot = doc.ballot_open("statchg")
+        self.assertIsNotNone(new_ballot)
+        self.assertNotEqual(new_ballot, old_ballot)
+        self.assertEqual(doc.get_state_slug("statchg"),"iesgeval")
+
     def setUp(self):
         super().setUp()
         IndividualRfcFactory(rfc_number=14,std_level_id='unkn') # draft was never issued
diff --git a/ietf/doc/views_ballot.py b/ietf/doc/views_ballot.py
index 02b55249d6..83ccb07be6 100644
--- a/ietf/doc/views_ballot.py
+++ b/ietf/doc/views_ballot.py
@@ -399,11 +399,22 @@ def send_ballot_comment(request, name, ballot_id):
 def clear_ballot(request, name, ballot_type_slug):
     """Clear all positions and discusses on every open ballot for a document."""
     doc = get_object_or_404(Document, name=name)
+    # If there's no appropriate ballot type state, clearing would be an invalid action.
+    # This will need to be updated if we ever allow defering IRTF ballots
+    if ballot_type_slug == "approve":
+        state_machine = "draft-iesg"
+    elif ballot_type_slug in ["statchg","conflrev"]:
+        state_machine = ballot_type_slug
+    else:
+        state_machine = None
+    state_slug = state_machine and doc.get_state_slug(state_machine)
+    if state_machine is None or state_slug is None:
+        raise Http404
     if request.method == 'POST':
         by = request.user.person
         if close_ballot(doc, by, ballot_type_slug):
             create_ballot_if_not_open(request, doc, by, ballot_type_slug)
-        if doc.get_state('draft-iesg').slug == 'defer':
+        if state_slug == "defer":
             do_undefer_ballot(request,doc)
         return redirect("ietf.doc.views_doc.document_main", name=doc.name)