This question was closed as off-topic. While it was open, someone posted an excellent answer, but it was to a slightly different question to the one I asked.
Once my actual question had been clarified, it turned out to be off-topic. I since re-posted it on the politics site.
Rather than allow that excellent answer to disappear, I rewrote the question to fit the answer, but it still has most of the close votes from when it was off-topic.
Please reconsider that question in its present form.