diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index e55ceb28b5..4ceb86c2c8 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1527,9 +1527,11 @@ phutil_register_library_map(array(
     'PhabricatorSetupIssueView' => 'applications/config/view/PhabricatorSetupIssueView.php',
     'PhabricatorSlowvoteChoice' => 'applications/slowvote/storage/PhabricatorSlowvoteChoice.php',
     'PhabricatorSlowvoteComment' => 'applications/slowvote/storage/PhabricatorSlowvoteComment.php',
+    'PhabricatorSlowvoteCommentController' => 'applications/slowvote/controller/PhabricatorSlowvoteCommentController.php',
     'PhabricatorSlowvoteController' => 'applications/slowvote/controller/PhabricatorSlowvoteController.php',
     'PhabricatorSlowvoteCreateController' => 'applications/slowvote/controller/PhabricatorSlowvoteCreateController.php',
     'PhabricatorSlowvoteDAO' => 'applications/slowvote/storage/PhabricatorSlowvoteDAO.php',
+    'PhabricatorSlowvoteEditor' => 'applications/slowvote/editor/PhabricatorSlowvoteEditor.php',
     'PhabricatorSlowvoteListController' => 'applications/slowvote/controller/PhabricatorSlowvoteListController.php',
     'PhabricatorSlowvoteOption' => 'applications/slowvote/storage/PhabricatorSlowvoteOption.php',
     'PhabricatorSlowvotePoll' => 'applications/slowvote/storage/PhabricatorSlowvotePoll.php',
@@ -3486,9 +3488,11 @@ phutil_register_library_map(array(
     'PhabricatorSetupIssueView' => 'AphrontView',
     'PhabricatorSlowvoteChoice' => 'PhabricatorSlowvoteDAO',
     'PhabricatorSlowvoteComment' => 'PhabricatorSlowvoteDAO',
+    'PhabricatorSlowvoteCommentController' => 'PhabricatorSlowvoteController',
     'PhabricatorSlowvoteController' => 'PhabricatorController',
     'PhabricatorSlowvoteCreateController' => 'PhabricatorSlowvoteController',
     'PhabricatorSlowvoteDAO' => 'PhabricatorLiskDAO',
+    'PhabricatorSlowvoteEditor' => 'PhabricatorApplicationTransactionEditor',
     'PhabricatorSlowvoteListController' =>
     array(
       0 => 'PhabricatorSlowvoteController',
diff --git a/src/applications/slowvote/application/PhabricatorApplicationSlowvote.php b/src/applications/slowvote/application/PhabricatorApplicationSlowvote.php
index bec1a90743..35c7c78fa2 100644
--- a/src/applications/slowvote/application/PhabricatorApplicationSlowvote.php
+++ b/src/applications/slowvote/application/PhabricatorApplicationSlowvote.php
@@ -44,6 +44,7 @@ final class PhabricatorApplicationSlowvote extends PhabricatorApplication {
           => 'PhabricatorSlowvoteListController',
         'create/' => 'PhabricatorSlowvoteCreateController',
         '(?P<id>[1-9]\d*)/' => 'PhabricatorSlowvoteVoteController',
+        'comment/(?P<id>[1-9]\d*)/' => 'PhabricatorSlowvoteCommentController',
       ),
     );
   }
diff --git a/src/applications/slowvote/controller/PhabricatorSlowvoteCommentController.php b/src/applications/slowvote/controller/PhabricatorSlowvoteCommentController.php
new file mode 100644
index 0000000000..a0b0a52051
--- /dev/null
+++ b/src/applications/slowvote/controller/PhabricatorSlowvoteCommentController.php
@@ -0,0 +1,70 @@
+<?php
+
+final class PhabricatorSlowvoteCommentController
+  extends PhabricatorSlowvoteController {
+
+  private $id;
+
+  public function willProcessRequest(array $data) {
+    $this->id = $data['id'];
+  }
+
+  public function processRequest() {
+    $request = $this->getRequest();
+    $user = $request->getUser();
+
+    if (!$request->isFormPost()) {
+      return new Aphront400Response();
+    }
+
+    $poll = id(new PhabricatorSlowvoteQuery())
+      ->setViewer($user)
+      ->withIDs(array($this->id))
+      ->executeOne();
+    if (!$poll) {
+      return new Aphront404Response();
+    }
+
+    $is_preview = $request->isPreviewRequest();
+    $draft = PhabricatorDraft::buildFromRequest($request);
+
+    $view_uri = '/V'.$poll->getID();
+
+    $xactions = array();
+    $xactions[] = id(new PhabricatorSlowvoteTransaction())
+      ->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
+      ->attachComment(
+        id(new PhabricatorSlowvoteTransactionComment())
+          ->setContent($request->getStr('comment')));
+
+    $editor = id(new PhabricatorSlowvoteEditor())
+      ->setActor($user)
+      ->setContinueOnNoEffect($request->isContinueRequest())
+      ->setContentSourceFromRequest($request)
+      ->setIsPreview($is_preview);
+
+    try {
+      $xactions = $editor->applyTransactions($poll, $xactions);
+    } catch (PhabricatorApplicationTransactionNoEffectException $ex) {
+      return id(new PhabricatorApplicationTransactionNoEffectResponse())
+        ->setCancelURI($view_uri)
+        ->setException($ex);
+    }
+
+    if ($draft) {
+      $draft->replaceOrDelete();
+    }
+
+    if ($request->isAjax()) {
+      return id(new PhabricatorApplicationTransactionResponse())
+        ->setViewer($user)
+        ->setTransactions($xactions)
+        ->setIsPreview($is_preview)
+        ->setAnchorOffset($request->getStr('anchor'));
+    } else {
+      return id(new AphrontRedirectResponse())
+        ->setURI($view_uri);
+    }
+  }
+
+}
diff --git a/src/applications/slowvote/controller/PhabricatorSlowvotePollController.php b/src/applications/slowvote/controller/PhabricatorSlowvotePollController.php
index 35264f5cd5..008bc5c204 100644
--- a/src/applications/slowvote/controller/PhabricatorSlowvotePollController.php
+++ b/src/applications/slowvote/controller/PhabricatorSlowvotePollController.php
@@ -140,6 +140,7 @@ final class PhabricatorSlowvotePollController
       $panel);
 
     $xactions = $this->buildTransactions($poll);
+    $add_comment = $this->buildCommentForm($poll);
 
     return $this->buildApplicationPage(
       array(
@@ -147,6 +148,7 @@ final class PhabricatorSlowvotePollController
         $header,
         $content,
         $xactions,
+        $add_comment,
       ),
       array(
         'title' => 'V'.$poll->getID().' '.$poll->getQuestion(),
@@ -384,4 +386,34 @@ final class PhabricatorSlowvotePollController
     return $timeline;
   }
 
+  private function buildCommentForm(PhabricatorSlowvotePoll $poll) {
+    $viewer = $this->getRequest()->getUser();
+
+    $is_serious = PhabricatorEnv::getEnvConfig('phabricator.serious-business');
+
+    $add_comment_header = id(new PhabricatorHeaderView())
+      ->setHeader(
+        $is_serious
+          ? pht('Add Comment')
+          : pht('Enter Deliberations'));
+
+    $submit_button_name = $is_serious
+      ? pht('Add Comment')
+      : pht('Perhaps');
+
+    $draft = PhabricatorDraft::newFromUserAndKey($viewer, $poll->getPHID());
+
+    $add_comment_form = id(new PhabricatorApplicationTransactionCommentView())
+      ->setUser($viewer)
+      ->setDraft($draft)
+      ->setAction($this->getApplicationURI('/comment/'.$poll->getID().'/'))
+      ->setSubmitButtonName($submit_button_name);
+
+    return array(
+      $add_comment_header,
+      $add_comment_form,
+    );
+  }
+
+
 }
diff --git a/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php b/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php
new file mode 100644
index 0000000000..c1c4441af1
--- /dev/null
+++ b/src/applications/slowvote/editor/PhabricatorSlowvoteEditor.php
@@ -0,0 +1,44 @@
+<?php
+
+final class PhabricatorSlowvoteEditor
+  extends PhabricatorApplicationTransactionEditor {
+
+  public function getTransactionTypes() {
+    $types = parent::getTransactionTypes();
+
+    $types[] = PhabricatorTransactions::TYPE_COMMENT;
+
+    return $types;
+  }
+
+  protected function getCustomTransactionOldValue(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+    }
+  }
+
+  protected function getCustomTransactionNewValue(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+    }
+  }
+
+  protected function applyCustomInternalTransaction(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+    }
+  }
+
+  protected function applyCustomExternalTransaction(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+    return;
+  }
+
+}