{% for d in dates %}
  <div class="vote-item">
    <label for="date_{{d.id}}">{{ d.display or d.date }}</label>
    <div>
      <span class="emoji">😞</span>
      <input type="range" name="date_{{d.id}}" value="{{d.preference}}">
      <span class="emoji">😀</span>
    </div>
  </div>
{% endfor %}