diff --git a/app/Http/Controllers/PollController.php b/app/Http/Controllers/PollController.php
index d17a468..422e7a5 100644
--- a/app/Http/Controllers/PollController.php
+++ b/app/Http/Controllers/PollController.php
@@ -6,7 +6,10 @@ use Illuminate\Http\Request;
 use Carbon\Carbon;
 use Validator;
 
+use DB;
 use App\Poll;
+use App\PollVote;
+use App\PollVotingCode;
 
 class PollController extends Controller
 {
@@ -77,12 +80,87 @@ class PollController extends Controller
             //TODO: Implement JSON output
             return null;
         } else {
-            return view('view_poll')->with('poll', $poll)->with('new', $new);
+            return view('view_poll')
+                ->with('poll', $poll)
+                ->with('new', $new)
+                ->with('hasVoted', $this->hasVoted($request, $poll));
         }
     }
 
+    public function viewResults(Request $request, Poll $poll)
+    {
+        if($poll->results_visible) {
+
+        } else {
+
+        }
+    }
+
+    private static function createPieChart(Poll $poll)
+    {
+        //TODO
+    }
+
+    public function hasVoted(Request $request, Poll $poll)
+    {
+        if($poll->duplicate_vote_checking == 'cookies') {
+            if($request->session()->exists($poll->id)) {
+                return true;
+            }
+        } else if($poll->duplicate_vote_checking == 'codes') {
+            $code = PollVotingCode::find($request->query('code'));
+
+            if($code == null || $code->used) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     public function vote(Request $request, Poll $poll)
     {
+        if($this->hasVoted($request, $poll)) {
+            return null;
+        }
+
+        if($poll->allow_multiple_answers) {
+            $validatedInput = $request->validate([
+                'options' => 'required|distinct',
+            ]);
+        } else {
+            $validatedInput = $request->validate([
+                'options' => 'required|distinct|min:1|max:1',
+            ]);
+        }
+
+        DB::beginTransaction();
+        foreach($validatedInput['options'] as $option)
+        {
+            //TODO: Properly display errors
+
+            if($poll->options()->find($option) == null) {
+                DB::rollBack();
+
+                return null;
+            }
+
+            $vote = new PollVote;
+            $vote->poll_option_id = $option;
+            $poll->votes()->save($vote);
+        }
+
+        DB::commit();
+
+        if($poll->duplicate_vote_checking == 'cookies') {
+            $request->session()->put($poll->id, null);
+        } else if($poll->duplicate_vote_checking == 'codes') {
+            $code->used = true;
+            $code->save();
+        }
+
+        //return redirect('PollController@viewResults', ['poll' => $poll]);
+        return view('view_poll')->with('poll', $poll)->with('new', false);
     }
 
     public function admin(Request $request, Poll $poll)
diff --git a/app/Poll.php b/app/Poll.php
index 014297f..14f2623 100644
--- a/app/Poll.php
+++ b/app/Poll.php
@@ -42,7 +42,6 @@ class Poll extends Model
     public function voting_codes()
     {
         return $this->hasMany('App\PollVotingCode');
-
     }
 
     public function createVotingCodes($n)
@@ -56,4 +55,9 @@ class Poll extends Model
 
         return $codes;
     }
+
+    public function getResultsVisibleAttribute()
+    {
+        return !$this->hide_results_until_closed || ($this->closes_at != null && $this->closes_at->isPast());
+    }
 }
diff --git a/app/PollVote.php b/app/PollVote.php
index 03ed12b..31c1cf6 100644
--- a/app/PollVote.php
+++ b/app/PollVote.php
@@ -6,6 +6,8 @@ use Illuminate\Database\Eloquent\Model;
 
 class PollVote extends Model
 {
+    protected $primaryKey = null;
+    public $incrementing = false;
     public $timestamps = false;
 
     public function poll()
diff --git a/config/app.php b/config/app.php
index 6ebb328..335d546 100644
--- a/config/app.php
+++ b/config/app.php
@@ -167,6 +167,7 @@ return [
         App\Providers\RouteServiceProvider::class,
 
         Stolz\HtmlTidy\ServiceProvider::class,
+
     ],
 
     /*
diff --git a/resources/views/view_poll.blade.php b/resources/views/view_poll.blade.php
index 6397d40..467942a 100644
--- a/resources/views/view_poll.blade.php
+++ b/resources/views/view_poll.blade.php
@@ -7,25 +7,34 @@ $type = $poll->allow_multiple_answers ? "checkbox" : "radio";
 @endphp
 
 @section('content')
-    <form>
-        <section class="grid grid--large">
-            <div>
-                @foreach ($poll->options as $option)
-                    <label class="{{$type}} no-bottom-margin">
-                        <input type="{{$type}}" name="option" value="{{$option->id}}">
-                        <span class="{{$type}}__label">{{$option->text}}</span>
-                    </label>
+    @if($hasVoted)
+        <section>
+            <span>You have already voted on this poll.</span>
 
-                    <br>
-                @endforeach
-            </div>
-            <div>
-                <!-- TODO: Pie chart (http://lavacharts.com/#example-pie) -->
-            </div>
-        </section>
+            <br>
 
-        <section class="some-top-margin">
-                <input type="submit" class="btn" value="Submit vote">
+            @if($poll->results_visible)
+                <div class="some-top-margin">
+                    <span><a href="{{ action('PollController@viewResults', ['poll' => $poll]) }}">Results</a></span>
+                </div>
+            @endif
         </section>
-    </form>
+    @else
+        <form action"={{ action('PollController@vote', ['poll' => $poll]) }}" method="post">
+            @csrf
+
+            @foreach ($poll->options as $option)
+                <label class="{{$type}} no-bottom-margin">
+                    <input type="{{$type}}" name="options[]" value="{{$option->id}}">
+                    <span class="{{$type}}__label">{{$option->text}}</span>
+                </label>
+
+                <br>
+            @endforeach
+
+            <section class="some-top-margin">
+                    <input type="submit" class="btn" value="Submit vote">
+            </section>
+        </form>
+    @endif
 @endsection
diff --git a/routes/web.php b/routes/web.php
index 63de9b4..cacc23c 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -19,8 +19,12 @@ Route::get('/poll', 'PollController');
 Route::post('/poll', 'PollController@create');
 
 Route::get('/poll/{poll}', 'PollController@view');
+
+//TODO: Add admin GET route
 Route::patch('/poll/{poll}', 'PollController@edit');
 
+Route::get('/poll/{poll}/results', 'PollController@viewResults');
+
 Route::post('/poll/{poll}/vote', 'PollController@vote');
 
 Route::get('/poll/{poll}/edit', 'PollController@admin');