Use allauth option not custom form to not require double password entry.

approval_polls/forms.py

@@ -90,14 +90,3 @@ def clean(self):
             else:
                 msg = "This field is required."
                 self.add_error("zipcode", msg)
-
-
-class CustomSignupForm(SignupForm):
-    def __init__(self, *args, **kwargs):
-        super(CustomSignupForm, self).__init__(*args, **kwargs)
-        del self.fields["password2"]
-
-    def save(self, request):
-        # Ensure you don't need to use password2 in the save method
-        user = super(CustomSignupForm, self).save(request)
-        return user

approval_polls/settings.py

@@ -283,4 +283,4 @@
 ACCOUNT_DEFAULT_HTTP_PROTOCOL = env(
     "ACCOUNT_DEFAULT_HTTP_PROTOCOL", str, default="https"
 )
-ACCOUNT_FORMS = {"signup": "approval_polls.forms.CustomSignupForm"}
+ACCOUNT_SIGNUP_PASSWORD_ENTER_TWICE = False