haha I dont think this kind of poll will ever work.
say 10 nords vs 10 khergits in the map village, you are in khergit and you make a poll to change faction:
since changing factions must result to reset map(like siege mode), so the nords must also be the participators of the poll. but the nords like killing horsemen in village or dismounted weak footmen, so these 10 with go against you, they choose 2; as for your 9 teammates, it is very possible that 1 or 2 men just love to be a khergit, and 2 or 3 men dont want to change so quickly, or dont care change or not, they also vote 2. the result will always be like 13:7 or worse. even only 1 of your teammate vote 2, the poll will still be "rejected by the majority".
this is also the reason that poll to change to village always wins.(I voted decline every single time though)