It's not quite that simple, Baa Baa. Having more financial support means National can employ the best neoliberal marketing support all through their terms, and they've hired Crosby-Textor continuously since 2004. The strong link between funds used in the last three months leading up to the election, and party votes obtained by National, also says that cash is king.
So that is how National sailed into the 2014 election with no new policies to speak of, and it didn't matter. Labour had a whole lot of good policies that suited their voting base, but no-one heard about them unless they looked hard. Heavy-hitting marketing, Crosby-Textor, bloggers, even iPredict were being used to make it look like National were clear winners well before the election. Perception is reality, and that showed in the polling and the final vote.
This time around Labour is at least not sitting on their hands when it comes to fundraising. They have started to reassess that in a very crude way, you can buy votes, and National has been doing just that to take their wins. I think Helen Clark and Mike Williams understood all that, just lately Labour's head office has been very keen on predictive software and databases, and they are still going to try that in 2017.