I would suggest most fans in the country support a "losing team" given the same teams, in both leagues, seem to reach the play offs each season now...
"Winning at Home" being the priority for most promoters, and is the key to their tracks being able to ensure their "die hards" come back regularly...
Enjoying the racing, and the social interaction...
Northampton have only really been seen to have been beaten "once" in the eyes of most of those attending that first meeting so far, given their away following will have been minimal at those defeats...
They will also be paying out lots of points money from their one income so far to pay for the several away meetings the imbalanced fixture list set them up with, so will need a decent few consecutive crowds at home to help balance the books...
The next few meetings will be very important to the success of the venture...
Opening a new team in a sport with such a small national following, with minimal public and media awareness, and making it work, is a massive challenge...
So, best of luck to all involved, let's hope most of their opening night crowd (the locals within it at least), stick with them..
Edit. And as for needing 10 wins for it to not be a "one season wonder", even if the crowds settle to around not too many below 1000, that would run a decent level Championship team next year..
The landscape of UK Speedway could be very different next season..
The success of the long term venture is very much linked to the next few home meetings...