diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5173e5795c..3c63e882b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#3231](https://github.com/Pycord-Development/pycord/pull/3231))
 - Allow `ForumTag` to be created without an emoji.
   ([#3245](https://github.com/Pycord-Development/pycord/pull/3245))
+- Fix `TypeError` in `Poll.to_dict` for closed polls.
+  ([#3261](https://github.com/Pycord-Development/pycord/pull/3261))
 
 ### Deprecated
 
diff --git a/discord/poll.py b/discord/poll.py
index a6878275b6..8773e39cbe 100644
--- a/discord/poll.py
+++ b/discord/poll.py
@@ -355,9 +355,9 @@ def __init__(
         self.duration: int | None = duration
         self.allow_multiselect: bool = allow_multiselect
         self.layout_type: PollLayoutType = layout_type
-        self.results = None
-        self._expiry = None
-        self._message = None
+        self.results: PollResults | None = None
+        self._expiry: str | None = None
+        self._message: Message | PartialMessage | None = None
 
     @cached_property
     def expiry(self) -> datetime.datetime | None:
@@ -372,8 +372,8 @@ def to_dict(self) -> PollPayload:
             "allow_multiselect": self.allow_multiselect,
             "layout_type": self.layout_type.value,
         }
-        if self.results:
-            dict_["results"] = [r.to_dict() for r in self.results]
+        if self.results is not None:
+            dict_["results"] = self.results.to_dict()
         if self._expiry:
             dict_["expiry"] = self._expiry
         return dict_