It is great that Django 1.4 allows fine graining of radio select
{% for radio in form.important_client reversed%}
{{radio.tag}}
This is one way to do that, it might not be the best but it works. In your form you can set the id for each of the choices like this:
from django import forms
class MyForm(forms.Form):
CHOICES = (('1','Available'),('2','Not Available'))
input = forms.ChoiceField(widget=RadioSelect(attrs={'id' : 'myId'},choices=CHOICES)
Then on your template:
{% for radio in form.input %}
{{ radio }}
{% endfor %}
And your HTML will look like this:
Available
Not Available
I hope this works!