4 Overkill
National sent up lots of ministers and put Steven Joyce in charge. Aimed at showing they cared, it crowded Osborne out.
5 Keep it local
National's campaign ranged from free trade with Korea to RMA reforms, seen as a fix for Auckland's housing problem, not local issues.
6 Pork-barrel politics
When National kept it local, it treated voters like fools. The Ten Bridges policy was far too blatant.
7 Labour voters
Labour derided tactical voting on the right, but is rejoicing over its candidate's abysmal result.
8 Risk averse
Fearful of a slip-up by Osborne, National over-managed him and he never really connected with voters.
9 Timing
Its lengthy selection process put National on the back foot; there was little time to build Osborne's profile.
10 The polls
Polls showing Peters well ahead in the final week were the death knell. National voters thought it was all over and went shopping.