diff --git a/plugins/poll/assets/javascripts/discourse/templates/poll.js.handlebars b/plugins/poll/assets/javascripts/discourse/templates/poll.js.handlebars
index 82b3ecd4f26..c7197451306 100644
--- a/plugins/poll/assets/javascripts/discourse/templates/poll.js.handlebars
+++ b/plugins/poll/assets/javascripts/discourse/templates/poll.js.handlebars
@@ -24,6 +24,18 @@
   {{/if}}
 </button>
 
+{{#if poll.post.topic.details.can_edit}}
+  <button {{action toggleClosePoll}} class="btn btn-small">
+    {{#if poll.closed}}
+      <i class="fa fa-unlock-alt"></i>
+      {{i18n poll.open_poll}}
+    {{else}}
+      <i class="fa fa-lock"></i>
+      {{i18n poll.close_poll}}
+    {{/if}}
+  </button>
+{{/if}}
+
 {{#if loading}}
   <i class="fa fa-spin fa-spinner"></i>
 {{/if}}
diff --git a/plugins/poll/assets/javascripts/poll_ui.js b/plugins/poll/assets/javascripts/poll_ui.js
index 4e4bc8a560f..90407615f3e 100644
--- a/plugins/poll/assets/javascripts/poll_ui.js
+++ b/plugins/poll/assets/javascripts/poll_ui.js
@@ -44,7 +44,6 @@ var Poll = Discourse.Model.extend({
 var PollController = Discourse.Controller.extend({
   poll: null,
   showResults: Em.computed.oneWay('poll.closed'),
-
   disableRadio: Em.computed.any('poll.closed', 'loading'),
 
   actions: {
@@ -67,6 +66,18 @@ var PollController = Discourse.Controller.extend({
 
     toggleShowResults: function() {
       this.set('showResults', !this.get('showResults'));
+    },
+
+    toggleClosePoll: function() {
+      this.set('loading', true);
+      return Discourse.ajax("/poll/toggle_close", {
+        type: "PUT",
+        data: {post_id: this.get('poll.post.id')}
+      }).then(function(topicJson) {
+        this.set('poll.post.topic.title', topicJson.basic_topic.title);
+        this.set('poll.post.topic.fancy_title', topicJson.basic_topic.title);
+        this.set('loading', false);
+      }.bind(this));
     }
   }
 });
diff --git a/plugins/poll/config/locales/client.en.yml b/plugins/poll/config/locales/client.en.yml
index 0d9ed7c52bc..23169bcfcc1 100644
--- a/plugins/poll/config/locales/client.en.yml
+++ b/plugins/poll/config/locales/client.en.yml
@@ -15,3 +15,6 @@ en:
       results:
         show: Show Results
         hide: Hide Results
+
+      close_poll: "Close Poll"
+      open_poll: "Open Poll"
diff --git a/plugins/poll/plugin.rb b/plugins/poll/plugin.rb
index 64d1a598bc3..fddf8251617 100644
--- a/plugins/poll/plugin.rb
+++ b/plugins/poll/plugin.rb
@@ -58,11 +58,45 @@ after_initialize do
 
         render json: poll.serialize(current_user)
       end
+
+      def toggle_close
+        post = Post.find(params[:post_id])
+        topic = post.topic
+        poll = PollPlugin::Poll.new(post)
+
+        # Make sure the user is allowed to close the poll.
+        Guardian.new(current_user).ensure_can_edit!(topic)
+
+        # Make sure this is actually a poll.
+        unless poll.has_poll_details?
+          render status: 400, json: false
+          return
+        end
+
+        # Make sure the topic is not closed.
+        if topic.closed?
+          render status: 400, json: false
+          return
+        end
+
+        # Modify topic title.
+        if topic.title =~ /^(#{I18n.t('poll.prefix').strip})\s?:/i
+          topic.title = topic.title.gsub(/^(#{I18n.t('poll.prefix').strip})\s?:/i, I18n.t('poll.closed_prefix') + ':')
+        elsif topic.title =~ /^(#{I18n.t('poll.closed_prefix').strip})\s?:/i
+          topic.title = topic.title.gsub(/^(#{I18n.t('poll.closed_prefix').strip})\s?:/i, I18n.t('poll.prefix') + ':')
+        end
+
+        topic.acting_user = current_user
+        topic.save!
+
+        render json: topic, serializer: BasicTopicSerializer
+      end
     end
   end
 
   PollPlugin::Engine.routes.draw do
     put '/' => 'poll#vote'
+    put '/toggle_close' => 'poll#toggle_close'
   end
 
   Discourse::Application.routes.append do
diff --git a/plugins/poll/spec/poll_plugin/poll_controller_spec.rb b/plugins/poll/spec/poll_plugin/poll_controller_spec.rb
index 7ccdc471ffe..a621db5762d 100644
--- a/plugins/poll/spec/poll_plugin/poll_controller_spec.rb
+++ b/plugins/poll/spec/poll_plugin/poll_controller_spec.rb
@@ -2,52 +2,89 @@ require 'spec_helper'
 
 describe PollPlugin::PollController, type: :controller do
   let(:topic) { create_topic(title: "Poll: Chitoge vs Onodera") }
-  let(:post) { create_post(topic: topic, raw: "Pick one.\n\n[poll]\n* Chitoge\n* Onodera\n[/poll]") }
+  let!(:post) { create_post(topic: topic, raw: "Pick one.\n\n[poll]\n* Chitoge\n* Onodera\n[/poll]") }
   let(:user1) { Fabricate(:user) }
   let(:user2) { Fabricate(:user) }
+  let(:admin) { Fabricate(:admin) }
 
-  it "should return 403 if no user is logged in" do
-    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
-    response.should be_forbidden
+  describe 'vote' do
+    it "returns 403 if no user is logged in" do
+      xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+      response.should be_forbidden
+    end
+
+    it "returns 400 if post_id or invalid option is not specified" do
+      log_in_user user1
+      xhr :put, :vote, use_route: :poll
+      response.status.should eq(400)
+      xhr :put, :vote, post_id: post.id, use_route: :poll
+      response.status.should eq(400)
+      xhr :put, :vote, option: "Chitoge", use_route: :poll
+      response.status.should eq(400)
+      xhr :put, :vote, post_id: post.id, option: "Tsugumi", use_route: :poll
+      response.status.should eq(400)
+    end
+
+    it "returns 400 if post_id doesn't correspond to a poll post" do
+      log_in_user user1
+      post2 = create_post(topic: topic, raw: "Generic reply")
+      xhr :put, :vote, post_id: post2.id, option: "Chitoge", use_route: :poll
+    end
+
+    it "saves votes correctly" do
+      MessageBus.expects(:publish).times(3)
+
+      log_in_user user1
+      xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+      PollPlugin::Poll.new(post).get_vote(user1).should eq("Chitoge")
+
+      log_in_user user2
+      xhr :put, :vote, post_id: post.id, option: "Onodera", use_route: :poll
+      PollPlugin::Poll.new(post).get_vote(user2).should eq("Onodera")
+
+      PollPlugin::Poll.new(post).details["Chitoge"].should eq(1)
+      PollPlugin::Poll.new(post).details["Onodera"].should eq(1)
+
+      xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
+      PollPlugin::Poll.new(post).get_vote(user2).should eq("Chitoge")
+
+      PollPlugin::Poll.new(post).details["Chitoge"].should eq(2)
+      PollPlugin::Poll.new(post).details["Onodera"].should eq(0)
+    end
   end
 
-  it "should return 400 if post_id or invalid option is not specified" do
-    log_in_user user1
-    xhr :put, :vote, use_route: :poll
-    response.status.should eq(400)
-    xhr :put, :vote, post_id: post.id, use_route: :poll
-    response.status.should eq(400)
-    xhr :put, :vote, option: "Chitoge", use_route: :poll
-    response.status.should eq(400)
-    xhr :put, :vote, post_id: post.id, option: "Tsugumi", use_route: :poll
-    response.status.should eq(400)
-  end
+  describe 'toggle_close' do
+    it "returns 400 if post_id doesn't correspond to a poll post" do
+      log_in_user admin
+      post2 = create_post(topic: topic, raw: "Generic reply")
+      xhr :put, :toggle_close, post_id: post2.id, use_route: :poll
+      response.status.should eq(400)
+    end
 
-  it "should return 400 if post_id doesn't correspond to a poll post" do
-    log_in_user user1
-    post2 = create_post(topic: topic, raw: "Generic reply")
-    xhr :put, :vote, post_id: post2.id, option: "Chitoge", use_route: :poll
-    response.status.should eq(400)
-  end
+    it "returns 400 if the topic is locked" do
+      log_in_user admin
+      topic.update_attributes closed: true
+      xhr :put, :toggle_close, post_id: post.id, use_route: :poll
+      response.status.should eq(400)
+    end
 
-  it "should save votes correctly" do
-    MessageBus.expects(:publish).times(4)
+    it "raises Discourse::InvalidAccess is the user is not authorized" do
+      log_in_user user1
+      expect do
+        xhr :put, :toggle_close, post_id: post.id, use_route: :poll
+      end.to raise_error(Discourse::InvalidAccess)
+    end
 
-    log_in_user user1
-    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
-    PollPlugin::Poll.new(post).get_vote(user1).should eq("Chitoge")
-
-    log_in_user user2
-    xhr :put, :vote, post_id: post.id, option: "Onodera", use_route: :poll
-    PollPlugin::Poll.new(post).get_vote(user2).should eq("Onodera")
-
-    PollPlugin::Poll.new(post).details["Chitoge"].should eq(1)
-    PollPlugin::Poll.new(post).details["Onodera"].should eq(1)
-
-    xhr :put, :vote, post_id: post.id, option: "Chitoge", use_route: :poll
-    PollPlugin::Poll.new(post).get_vote(user2).should eq("Chitoge")
-
-    PollPlugin::Poll.new(post).details["Chitoge"].should eq(2)
-    PollPlugin::Poll.new(post).details["Onodera"].should eq(0)
+    it "renames the topic" do
+      I18n.stubs(:t).with('poll.prefix').returns("Poll ")
+      I18n.stubs(:t).with('poll.closed_prefix').returns("Closed Poll ")
+      log_in_user admin
+      xhr :put, :toggle_close, post_id: post.id, use_route: :poll
+      response.status.should eq(200)
+      topic.reload.title.should == "Closed Poll : Chitoge vs Onodera"
+      xhr :put, :toggle_close, post_id: post.id, use_route: :poll
+      response.status.should eq(200)
+      topic.reload.title.should == "Poll : Chitoge vs Onodera"
+    end
   end
 end