old_contents: from django.db import models
  from django.contrib.auth.models import User
  
  
  class Poll(models.Model):
      question = models.CharField(max_length=255)
  
      def __unicode__(self):
          return self.question
  
  class Choice(models.Model):
      poll = models.ForeignKey(Poll)
      choice = models.CharField(max_length=255)
  
      def __unicode__(self):
          return self.choice
  
  class Vote(models.Model):
      user = models.ForeignKey(User)
      poll = models.ForeignKey(Poll)
      choice = models.ForeignKey(Choice)
  
new_contents: from django.db import models
  from django.contrib.auth.models import User
  
  
  class Poll(models.Model):
      question = models.CharField(max_length=255)
      description = models.TextField()
  
      def __unicode__(self):
          return self.question
  
  class Choice(models.Model):
      poll = models.ForeignKey(Poll)
      choice = models.CharField(max_length=255)
  
      def __unicode__(self):
          return self.choice
  
  class Vote(models.Model):
      user = models.ForeignKey(User)
      poll = models.ForeignKey(Poll)
      choice = models.ForeignKey(Choice)
  
subject: add description field to poll model