Is "gay" marriage losing momentum, or are some polls not reflective of the New Zealand population?

For anyone who is interested in the NZ Herald digital poll about same sex marriage, you can find it at the bottom of http://www.nzherald.co.nz/ 's page. At the time of writing 52% of people do not support the bill. A select committee was established to hear submissions from both sides of the argument. Here is a breakdown of the submission.

Submissions
21,533 Total
10,487 For
8148 Against
2898 Unique submissions
220 Heard by committee

Two things stand out. For people in favor of allowing homosexuals to marry, support in most polls appears to still favor them. More submissions to legalise the bill were put forth than those against it. However, what also stands out is the decline as a proportion of people who appear to be against the bill. Last year, Colmar Brunton allegedly did a poll for TVNZ, with the results showing about two thirds in favour and one third opposed to it. Within the small space of 8 months, people may be changing their minds. 

The New Zealand herald poll is not the first to show people voting in favor of keeping marriage between a man and a woman. Yahoo also had a similar poll. 62% of people voted "no" to change the definition of marriage, 34% voted yes,  4% were undecided. 

Those two polls aside, there is still a relatively strong backing from politicians, who passed the bill in its second reading. Polls on stuff.co.nz and TVNZ show that it's visitors are quite happy the beehive voted in favor of it.

I'm not sure whether these inconsistent poll results spurred the select committee to rush the bill through in a mere seven months. I'd also be interested to know what the enutre homosexual community in New Zealand think of this bill? (not just noise makers like Ms Wall and Kevin Hague) Will a majority of them make use of it? Is there a requirement to change the law? Do they want to get married rather than enter a civil union?  These are serious questions which only homosexuals themselves can answer.  

If anyone, (whether in support of "gay" marriage or against it)tries to drag me into this discussion, they will be left in the rain; I'm raising an issue of people changing their minds on the bill, not the positives and/or negative of introducing marriage "equality." 

But, in case they try, here is my answer. Same sex marriage is an immensely trivial issue in the wider scope of things. It amazes me that anyone can argue this issue is as important as rebuilding Christchurch, helping hardworking parents provide for their children or working towards fixing New Zealand's horrendous drinking problem. Apart from a few tree hoppers in the each political Party and those sneering youth wing leaders (who I have not seen making speeches outside parliament on any of the issues mentioned above) you won't see many people disagreeing there.