when your campaign has bugs, git-bisect

Basic strategy ~ embrace/deny/embrace/embrace/deny and you should find the right position.

Below is an in-progress example, currently in the embrace stage:

http://2012.talkingpointsmemo.com/2012/09/romney-touts-romneycare.php

If the problem cannot be solved (because of time-variant external dependencies) or you may need to run:

git-bisect --abort