A useful way to track events and conversions through Google Analytics is using their Goals feature. There are three key steps in the process, which are explained below in detail:

Add the following code to the template of the landing page of your CampaignNow action (make sure to update the "YOUR CAMPAIGN NAME HERE" text):

{% if request.url contains "?thanks" %}
<script type="text/javascript">
  var _gaq = _gaq || [];
  _gaq.push(['_trackEvent','Direct Email Petition','Submitted','YOUR CAMPAIGN NAME HERE']);
</script>
{% endif %}

Ensure the redirect URL for your CampaignNow action includes the "?thanks" URL parameter at the end (e.g. http://www.example.org.au/donate_now?thanks). You could substitute the word "thanks" for something more appropriate, as long as you also update the first line of code from point 1 above to reflect that amended URL parameter text.

Go to the relevant view within your Google Analytics property and create a new goal. Select that you wish to create a custom goal of type "event". In the "goal details" section set the Category to "Direct Email Petition", set the Action to "Submitted" and set the label to whatever name you used in step 1 above to replace the text "YOUR CAMPAIGN NAME HERE". Once that's done, you will start to see the conversion data appear in Google Analytics within a couple of hours of the first conversion being achieved.

One point to note is that NationBuilder loads the ga.js library rather than analytics.js as part of the code provided through their {{content_for_header}} and {{content_for_footer}} snippets.
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