All you need to do is go to our official Kiwi PyCon Twitter feed and retweet our Retweet Raffle tweet, which reads as follows:
"Kiwi PyCon 13 Retweet Raffle, courtesy of @GitHub: RT to win a free ticket! nz.pycon.org"
The Retweet Raffle finishes at midnight (NZST) on Thursday, August 29. We'll announce the winner the next day on Friday morning. So get RTing!