diff --git a/src/components/views/context_menus/MessageContextMenu.tsx b/src/components/views/context_menus/MessageContextMenu.tsx
index 84c61a716d..019691e4c7 100644
--- a/src/components/views/context_menus/MessageContextMenu.tsx
+++ b/src/components/views/context_menus/MessageContextMenu.tsx
@@ -19,6 +19,7 @@ import React from 'react';
 import { EventStatus, MatrixEvent } from 'matrix-js-sdk/src/models/event';
 import { EventType, RelationType } from "matrix-js-sdk/src/@types/event";
 import { Relations } from 'matrix-js-sdk/src/models/relations';
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import { MatrixClientPeg } from '../../../MatrixClientPeg';
 import dis from '../../../dispatcher/dispatcher';
@@ -42,7 +43,6 @@ import { IPosition, ChevronFace } from '../../structures/ContextMenu';
 import RoomContext, { TimelineRenderingType } from '../../../contexts/RoomContext';
 import { ComposerInsertPayload } from "../../../dispatcher/payloads/ComposerInsertPayload";
 import { WidgetLayoutStore } from '../../../stores/widgets/WidgetLayoutStore';
-import { POLL_START_EVENT_TYPE } from '../../../polls/consts';
 import EndPollDialog from '../dialogs/EndPollDialog';
 import { isPollEnded } from '../messages/MPollBody';
 
diff --git a/src/components/views/dialogs/EndPollDialog.tsx b/src/components/views/dialogs/EndPollDialog.tsx
index cf50193639..f3403839b9 100644
--- a/src/components/views/dialogs/EndPollDialog.tsx
+++ b/src/components/views/dialogs/EndPollDialog.tsx
@@ -18,11 +18,12 @@ import React from "react";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { MatrixClient } from "matrix-js-sdk/src/client";
 import { Relations } from "matrix-js-sdk/src/models/relations";
+import { IPollEndContent, POLL_END_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
+import { TEXT_NODE_TYPE } from "matrix-js-sdk/src/@types/extensible_events";
 
 import { _t } from "../../../languageHandler";
 import { IDialogProps } from "./IDialogProps";
 import QuestionDialog from "./QuestionDialog";
-import { IPollEndContent, POLL_END_EVENT_TYPE, TEXT_NODE_TYPE } from "../../../polls/consts";
 import { findTopAnswer } from "../messages/MPollBody";
 import Modal from "../../../Modal";
 import ErrorDialog from "./ErrorDialog";
diff --git a/src/components/views/elements/PollCreateDialog.tsx b/src/components/views/elements/PollCreateDialog.tsx
index 4e1e76d23f..1f442c93d8 100644
--- a/src/components/views/elements/PollCreateDialog.tsx
+++ b/src/components/views/elements/PollCreateDialog.tsx
@@ -16,6 +16,7 @@ limitations under the License.
 
 import React, { ChangeEvent, createRef } from "react";
 import { Room } from "matrix-js-sdk/src/models/room";
+import { makePollContent, POLL_KIND_DISCLOSED, POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import ScrollableBaseModal, { IScrollableBaseState } from "../dialogs/ScrollableBaseModal";
 import { IDialogProps } from "../dialogs/IDialogProps";
@@ -25,7 +26,6 @@ import { _t } from "../../../languageHandler";
 import { arrayFastClone, arraySeed } from "../../../utils/arrays";
 import Field from "./Field";
 import AccessibleButton from "./AccessibleButton";
-import { makePollContent, POLL_KIND_DISCLOSED, POLL_START_EVENT_TYPE } from "../../../polls/consts";
 import Spinner from "./Spinner";
 
 interface IProps extends IDialogProps {
diff --git a/src/components/views/messages/MPollBody.tsx b/src/components/views/messages/MPollBody.tsx
index 10f43938ed..51c895414b 100644
--- a/src/components/views/messages/MPollBody.tsx
+++ b/src/components/views/messages/MPollBody.tsx
@@ -19,12 +19,7 @@ import classNames from 'classnames';
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { Relations } from 'matrix-js-sdk/src/models/relations';
 import { MatrixClient } from 'matrix-js-sdk/src/matrix';
-
-import { _t } from '../../../languageHandler';
-import { replaceableComponent } from "../../../utils/replaceableComponent";
-import Modal from '../../../Modal';
-import { IBodyProps } from "./IBodyProps";
-import { formatCommaSeparatedList } from '../../../utils/FormattingUtils';
+import { TEXT_NODE_TYPE } from "matrix-js-sdk/src/@types/extensible_events";
 import {
     IPollAnswer,
     IPollContent,
@@ -32,8 +27,13 @@ import {
     POLL_END_EVENT_TYPE,
     POLL_RESPONSE_EVENT_TYPE,
     POLL_START_EVENT_TYPE,
-    TEXT_NODE_TYPE,
-} from '../../../polls/consts';
+} from "matrix-js-sdk/src/@types/polls";
+
+import { _t } from '../../../languageHandler';
+import { replaceableComponent } from "../../../utils/replaceableComponent";
+import Modal from '../../../Modal';
+import { IBodyProps } from "./IBodyProps";
+import { formatCommaSeparatedList } from '../../../utils/FormattingUtils';
 import StyledRadioButton from '../elements/StyledRadioButton';
 import MatrixClientContext from "../../../contexts/MatrixClientContext";
 import ErrorDialog from '../dialogs/ErrorDialog';
diff --git a/src/components/views/messages/MessageEvent.tsx b/src/components/views/messages/MessageEvent.tsx
index 2cd23779d3..c40c9ff2a0 100644
--- a/src/components/views/messages/MessageEvent.tsx
+++ b/src/components/views/messages/MessageEvent.tsx
@@ -17,6 +17,7 @@ limitations under the License.
 import React, { createRef } from 'react';
 import { EventType, MsgType } from "matrix-js-sdk/src/@types/event";
 import { Relations } from 'matrix-js-sdk/src/models/relations';
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import * as sdk from '../../../index';
 import SettingsStore from "../../../settings/SettingsStore";
@@ -29,7 +30,6 @@ import { IOperableEventTile } from "../context_menus/MessageContextMenu";
 import { MediaEventHelper } from "../../../utils/MediaEventHelper";
 import { ReactAnyComponent } from "../../../@types/common";
 import { IBodyProps } from "./IBodyProps";
-import { POLL_START_EVENT_TYPE } from '../../../polls/consts';
 
 // onMessageAllowed is handled internally
 interface IProps extends Omit<IBodyProps, "onMessageAllowed"> {
diff --git a/src/components/views/rooms/EventTile.tsx b/src/components/views/rooms/EventTile.tsx
index 88a2682c90..2db9b311ea 100644
--- a/src/components/views/rooms/EventTile.tsx
+++ b/src/components/views/rooms/EventTile.tsx
@@ -24,6 +24,7 @@ import { RoomMember } from "matrix-js-sdk/src/models/room-member";
 import { Thread, ThreadEvent } from 'matrix-js-sdk/src/models/thread';
 import { logger } from "matrix-js-sdk/src/logger";
 import { NotificationCountType } from 'matrix-js-sdk/src/models/room';
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import ReplyChain from "../elements/ReplyChain";
 import { _t } from '../../../languageHandler';
@@ -65,7 +66,6 @@ import { MessagePreviewStore } from '../../../stores/room-list/MessagePreviewSto
 import { TimelineRenderingType } from "../../../contexts/RoomContext";
 import { MediaEventHelper } from "../../../utils/MediaEventHelper";
 import Toolbar from '../../../accessibility/Toolbar';
-import { POLL_START_EVENT_TYPE } from '../../../polls/consts';
 import { RovingAccessibleTooltipButton } from '../../../accessibility/roving/RovingAccessibleTooltipButton';
 import { RovingThreadListContextMenu } from '../context_menus/ThreadListContextMenu';
 import { ThreadNotificationState } from '../../../stores/notifications/ThreadNotificationState';
diff --git a/src/components/views/rooms/MessageComposer.tsx b/src/components/views/rooms/MessageComposer.tsx
index 7af913763b..3698f87d2e 100644
--- a/src/components/views/rooms/MessageComposer.tsx
+++ b/src/components/views/rooms/MessageComposer.tsx
@@ -21,6 +21,7 @@ import { RoomMember } from "matrix-js-sdk/src/models/room-member";
 import { RelationType } from 'matrix-js-sdk/src/@types/event';
 import { MsgType } from "matrix-js-sdk/src/@types/event";
 import { logger } from "matrix-js-sdk/src/logger";
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import { _t } from '../../../languageHandler';
 import { MatrixClientPeg } from '../../../MatrixClientPeg';
@@ -56,7 +57,6 @@ import LocationPicker from '../location/LocationPicker';
 import UIStore, { UI_EVENTS } from '../../../stores/UIStore';
 import Modal from "../../../Modal";
 import RoomContext from '../../../contexts/RoomContext';
-import { POLL_START_EVENT_TYPE } from "../../../polls/consts";
 import ErrorDialog from "../dialogs/ErrorDialog";
 import PollCreateDialog from "../elements/PollCreateDialog";
 import LocationShareType from "../location/LocationShareType";
diff --git a/src/polls/consts.ts b/src/polls/consts.ts
deleted file mode 100644
index dfb56c0fe8..0000000000
--- a/src/polls/consts.ts
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
-Copyright 2021 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import { UnstableValue } from "matrix-js-sdk/src/NamespacedValue";
-import { IContent } from "matrix-js-sdk/src/models/event";
-
-export const POLL_START_EVENT_TYPE = new UnstableValue("m.poll.start", "org.matrix.msc3381.poll.start");
-export const POLL_RESPONSE_EVENT_TYPE = new UnstableValue("m.poll.response", "org.matrix.msc3381.poll.response");
-export const POLL_END_EVENT_TYPE = new UnstableValue("m.poll.end", "org.matrix.msc3381.poll.end");
-export const POLL_KIND_DISCLOSED = new UnstableValue("m.poll.disclosed", "org.matrix.msc3381.poll.disclosed");
-export const POLL_KIND_UNDISCLOSED = new UnstableValue("m.poll.undisclosed", "org.matrix.msc3381.poll.undisclosed");
-
-// TODO: [TravisR] Use extensible events library when ready
-export const TEXT_NODE_TYPE = new UnstableValue("m.text", "org.matrix.msc1767.text");
-
-export interface IPollAnswer extends IContent {
-    id: string;
-    [TEXT_NODE_TYPE.name]: string;
-}
-
-export interface IPollContent extends IContent {
-    [POLL_START_EVENT_TYPE.name]: {
-        kind: string; // disclosed or undisclosed (untypeable for now)
-        question: {
-            [TEXT_NODE_TYPE.name]: string;
-        };
-        answers: IPollAnswer[];
-    };
-    [TEXT_NODE_TYPE.name]: string;
-}
-
-export interface IPollResponseContent extends IContent {
-    [POLL_RESPONSE_EVENT_TYPE.name]: {
-        answers: string[];
-    };
-    "m.relates_to": {
-        "event_id": string;
-        "rel_type": string;
-    };
-}
-
-export interface IPollEndContent extends IContent {
-    [POLL_END_EVENT_TYPE.name]: {};
-    "m.relates_to": {
-        "event_id": string;
-        "rel_type": string;
-    };
-}
-
-export function makePollContent(question: string, answers: string[], kind: string): IPollContent {
-    question = question.trim();
-    answers = answers.map(a => a.trim()).filter(a => !!a);
-    return {
-        [TEXT_NODE_TYPE.name]: `${question}\n${answers.map((a, i) => `${i + 1}. ${a}`).join('\n')}`,
-        [POLL_START_EVENT_TYPE.name]: {
-            kind: kind,
-            question: {
-                [TEXT_NODE_TYPE.name]: question,
-            },
-            answers: answers.map(
-                (a, i) => ({ id: `${i}-${a}`, [TEXT_NODE_TYPE.name]: a }),
-            ),
-        },
-    };
-}
diff --git a/src/stores/room-list/MessagePreviewStore.ts b/src/stores/room-list/MessagePreviewStore.ts
index 45e98dc33f..edf7b3cc31 100644
--- a/src/stores/room-list/MessagePreviewStore.ts
+++ b/src/stores/room-list/MessagePreviewStore.ts
@@ -17,6 +17,7 @@ limitations under the License.
 import { Room } from "matrix-js-sdk/src/models/room";
 import { isNullOrUndefined } from "matrix-js-sdk/src/utils";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import { ActionPayload } from "../../dispatcher/payloads";
 import { AsyncStoreWithClient } from "../AsyncStoreWithClient";
@@ -30,7 +31,6 @@ import { CallHangupEvent } from "./previews/CallHangupEvent";
 import { StickerEventPreview } from "./previews/StickerEventPreview";
 import { ReactionEventPreview } from "./previews/ReactionEventPreview";
 import { UPDATE_EVENT } from "../AsyncStore";
-import { POLL_START_EVENT_TYPE } from "../../polls/consts";
 import SettingsStore from "../../settings/SettingsStore";
 
 // Emitted event for when a room's preview has changed. First argument will the room for which
diff --git a/src/stores/room-list/previews/PollStartEventPreview.ts b/src/stores/room-list/previews/PollStartEventPreview.ts
index ff78258d3b..b473916bf8 100644
--- a/src/stores/room-list/previews/PollStartEventPreview.ts
+++ b/src/stores/room-list/previews/PollStartEventPreview.ts
@@ -15,12 +15,13 @@ limitations under the License.
 */
 
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
+import { TEXT_NODE_TYPE } from "matrix-js-sdk/src/@types/extensible_events";
 
 import { IPreview } from "./IPreview";
 import { TagID } from "../models";
 import { _t, sanitizeForTranslation } from "../../../languageHandler";
 import { getSenderName, isSelf, shouldPrefixMessagesIn } from "./utils";
-import { POLL_START_EVENT_TYPE, TEXT_NODE_TYPE } from "../../../polls/consts";
 import MatrixClientContext from "../../../contexts/MatrixClientContext";
 
 export class PollStartEventPreview implements IPreview {
diff --git a/src/utils/EventUtils.ts b/src/utils/EventUtils.ts
index a2773ab044..5a7332301b 100644
--- a/src/utils/EventUtils.ts
+++ b/src/utils/EventUtils.ts
@@ -19,12 +19,12 @@ import { EventType, MsgType, RelationType } from "matrix-js-sdk/src/@types/event
 import { MatrixClient } from 'matrix-js-sdk/src/client';
 import { Thread } from 'matrix-js-sdk/src/models/thread';
 import { logger } from 'matrix-js-sdk/src/logger';
+import { POLL_START_EVENT_TYPE } from "matrix-js-sdk/src/@types/polls";
 
 import { MatrixClientPeg } from '../MatrixClientPeg';
 import shouldHideEvent from "../shouldHideEvent";
 import { getHandlerTile, haveTileForEvent } from "../components/views/rooms/EventTile";
 import SettingsStore from "../settings/SettingsStore";
-import { POLL_START_EVENT_TYPE } from '../polls/consts';
 
 /**
  * Returns whether an event should allow actions like reply, reactions, edit, etc.
diff --git a/test/components/views/messages/MPollBody-test.tsx b/test/components/views/messages/MPollBody-test.tsx
index ff62c26c71..fa8f123930 100644
--- a/test/components/views/messages/MPollBody-test.tsx
+++ b/test/components/views/messages/MPollBody-test.tsx
@@ -19,16 +19,16 @@ import { mount, ReactWrapper } from "enzyme";
 import { Callback, IContent, MatrixClient, MatrixEvent, Room } from "matrix-js-sdk";
 import { ISendEventResponse } from "matrix-js-sdk/src/@types/requests";
 import { Relations } from "matrix-js-sdk/src/models/relations";
-
-import * as TestUtils from "../../../test-utils";
-import sdk from "../../../skinned-sdk";
 import {
     IPollAnswer,
     IPollContent,
     POLL_END_EVENT_TYPE,
     POLL_RESPONSE_EVENT_TYPE,
-    TEXT_NODE_TYPE,
-} from "../../../../src/polls/consts";
+} from "matrix-js-sdk/src/@types/polls";
+import { TEXT_NODE_TYPE } from "matrix-js-sdk/src/@types/extensible_events";
+
+import * as TestUtils from "../../../test-utils";
+import sdk from "../../../skinned-sdk";
 import {
     UserVote,
     allVotes,
diff --git a/test/stores/room-list/previews/PollStartEventPreview-test.ts b/test/stores/room-list/previews/PollStartEventPreview-test.ts
index d1df55685a..ed4e8cb8f1 100644
--- a/test/stores/room-list/previews/PollStartEventPreview-test.ts
+++ b/test/stores/room-list/previews/PollStartEventPreview-test.ts
@@ -15,8 +15,8 @@ limitations under the License.
 */
 
 import { MatrixEvent } from "matrix-js-sdk";
+import { IPollAnswer } from "matrix-js-sdk/src/@types/polls";
 
-import { IPollAnswer } from "../../../../src/polls/consts";
 import { PollStartEventPreview } from "../../../../src/stores/room-list/previews/PollStartEventPreview";
 import { MatrixClientPeg } from "../../../../src/MatrixClientPeg";