wellinton is larger than canberra. league may be the number 1 in canberra but they have the brumbies in the super 14, if canberra can suppourt nrl and a super 14 side i know wellington can support an nrl team as well as the hurricanes in the suer 14 union.
many people suppourt both codes of rugby but union is the number 1 in wellington but league has always had it's suppourters. the general sports fan in the city will give any decent sport a go! thiers 450,000 people in the wellington region and then thiers other centres in the lower north island that people will travel from. super 14 only go's for i/2 a season so welli nrl would have the second half winter season to itself. the phoenix A-league soccer teams plays in summer so wouldnt directly be in competition. look how succesfull they have been and rugby league get better crowds at local level than soccer ever has, you walk past a soccer game and if theres more than 6 people whatching a soccer game at a park in wellington! an yet look how well the phoenix have done!
wellington could have an nrl team but people really have to make it happen by holding league events nrl games/tests etc and drawing good crowds, setting up a lobbying group and encourage people to join it, thinking up ways to keep the idea in the media and have potential sponsors and a stadium lined up.