Back in 2014, National's Jonathan Coleman was sprung adding his two bobs' worth to the graffiti on the unattended Labour Party election campaign bus in Northcote.
What this suburban guerilla armed with a Sharpie wrote was: "Five new taxes." At first blush it appeared to be a jibe at Labour and Green Party policies. Coleman was so proud he even tweeted about it.
Who could have guessed Coleman was instead being aspirational about National's own plans? What nobody appreciated was that Coleman was an unlikely Cassandra - a soothsayer giving a prediction nobody could believe.
After all, National spent much of the campaign banging on about the Five Taxes of Labour and the Greens as if they were the Seven Sins. These included a capital gains tax, higher income tax for high earners, regional water and fuel levies and a carbon tax. By contrast, National was promising to do nothing. "No new taxes," Steven Joyce gloated in early September when he was releasing a new campaign video which listed those five taxes of Labour and the Greens. The voiceover said all those taxes "would stall our economy and cost thousands of jobs".
What few realised was that National's "no new taxes" had an invisible asterisk attached, pointing to certain terms and conditions. Those conditions appeared to include "does not apply to new taxes on bogey men" and "does not apply if we need a tax to outflank Labour".