diff --git a/CHANGELOG.md b/CHANGELOG.md
index dab3127..e6d5e9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## :package: [0.3.0](https://pypi.org/project/uk-election-ids/0.3.0/) - 2020-10-27
+
+Added `senedd` election type
+
 ## :package: [0.2.1](https://pypi.org/project/uk-election-ids/0.2.1/) - 2019-10-16
 
 Tested on Python 3.8
diff --git a/setup.py b/setup.py
index d7c0827..ce7b0fb 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ def _get_description():
 
 setup(
     name="uk_election_ids",
-    version="0.2.1",
+    version="0.3.0",
     author="chris48s",
     license="MIT",
     url="https://github.com/DemocracyClub/uk-election-ids/",
diff --git a/tests/test_id_builder.py b/tests/test_id_builder.py
index 4c2f3dd..d1f15ec 100644
--- a/tests/test_id_builder.py
+++ b/tests/test_id_builder.py
@@ -22,7 +22,7 @@ def test_string_date(self):
         self.assertEqual("parl.2018-05-03", election_id)
 
     def test_naw_sp_without_subtype(self):
-        for election_type in ("naw", "sp"):
+        for election_type in ("naw", "sp", "senedd"):
             id = IdBuilder(election_type, date(2018, 5, 3)).with_division(
                 "test-division"
             )
@@ -37,12 +37,12 @@ def test_naw_sp_without_subtype(self):
             self.assertEqual(["%s.2018-05-03" % (election_type)], id.ids)
 
     def test_naw_sp_invalid_subtype(self):
-        for election_type in ("naw", "sp"):
+        for election_type in ("naw", "sp", "senedd"):
             with self.assertRaises(ValueError):
                 IdBuilder(election_type, date(2018, 5, 3)).with_subtype("x")
 
     def test_naw_sp_valid_subtype_no_division(self):
-        for election_type in ("naw", "sp"):
+        for election_type in ("naw", "sp", "senedd"):
             id = IdBuilder(election_type, date(2018, 5, 3)).with_subtype("c")
             election_id = id.election_group_id
             self.assertEqual("%s.2018-05-03" % (election_type), election_id)
@@ -61,12 +61,12 @@ def test_naw_sp_valid_subtype_no_division(self):
             )
 
     def test_naw_sp_with_org(self):
-        for election_type in ("naw", "sp"):
+        for election_type in ("naw", "sp", "senedd"):
             with self.assertRaises(ValueError):
                 IdBuilder(election_type, date(2018, 5, 3)).with_organisation("test-org")
 
     def test_naw_sp_with_division(self):
-        for election_type in ("naw", "sp"):
+        for election_type in ("naw", "sp", "senedd"):
             id = (
                 IdBuilder(election_type, date(2018, 5, 3))
                 .with_subtype("r")
diff --git a/uk_election_ids/datapackage.py b/uk_election_ids/datapackage.py
index 3a9f6d3..14fb1f3 100644
--- a/uk_election_ids/datapackage.py
+++ b/uk_election_ids/datapackage.py
@@ -30,6 +30,16 @@
         "can_have_orgs": False,
         "can_have_divs": True,
     },
+    "senedd": {
+        "name": "Senedd Cymru elections",
+        "subtypes": [
+            {"name": "Constituencies", "election_subtype": "c"},
+            {"name": "Regions", "election_subtype": "r"},
+        ],
+        "default_voting_system": "AMS",
+        "can_have_orgs": False,
+        "can_have_divs": True,
+    },
     "sp": {
         "name": "Scottish Parliament elections",
         "subtypes": [
diff --git a/uk_election_ids/election_ids.py b/uk_election_ids/election_ids.py
index a495208..20094cd 100644
--- a/uk_election_ids/election_ids.py
+++ b/uk_election_ids/election_ids.py
@@ -79,7 +79,7 @@ def __init__(self, election_type, date):
 
         Args:
             election_type (str): May be one of
-                ``['europarl', 'gla', 'local', 'mayor', 'naw', 'nia', 'parl', 'pcc', 'sp']``
+                ``['europarl', 'gla', 'local', 'mayor', 'naw', 'nia', 'parl', 'pcc', 'sp', 'senedd']``
             date (date|str): May be either a python date object,
                 or a string in 'Y-m-d' format.
                 ``myid = IdBuilder('local', date(2018, 5, 3))`` and