With an election:
Download the election data and use OpenSTV to audit the results.
Previously, this was a free to download application. It isn't anymore.
... To support continued development, OpenSTV is now available under a restrictive license.
The license is for one year with prices ranging from $10 to $400. For small non-profits, the price is only $10. For medium non-profits, the price is $40. For all other organizations the price is $400. ...
The individual license is $10. Given this, should Stack Exchange continue to promote the site for auditing running election returns?