I must put out a scenario for you here. Imagine this: I'm a town official. You live in my town, and chickens are illegal but you go ahead anyway. One of those "all in favor of it" neighbors suddenly gets a thorn in his/her kilt because the noise and possibly odor will be more than any of you expect, and turns you in. Or your chickens are spotted by someone else who takes exception to them. Do you seriously think you can hide chickens in your backyard and not have a police officer or town maintenance worker drive by with their windows down hear the singing of the egg song? So we send someone out to take a look and to give you a cease and desist order. You then take your chickens to your friend's place until you can get the law changed. So far so good.
Time comes up for the hearings on whether or not to allow chickens in town. You come armed with all kinds of information prepared to defend your position at all costs. How do you think we are going to react to your pleas? You'll make all kinds of promises that you'll follow every regulation we enact. Tell me, why should we believe you when you've already shown blatant disregard for the laws already in place regarding poultry? See, if your 5 year old has broken every lamp in the house with a ball, then promises if you get him a new ball he'll never break another lamp again, would you get him another ball and turn him loose in the living room? It's the same thing. And because you put the cart before the horse, if there are others who are working for the right to change the law to allow backyard chickens, you've just pi**ed in their path of progress.
If you so firmly believe that the ordinance will be changed after the next election, why not wait until then rather than risk having the town council, planning and zoning, and whatever other entity governs your community already distrust your word? I can almost guarantee what your post will be in a few months - "The evil Nazis in our community's government told me I have to get rid of my chickens and pay a fine. They are nasty and horrible money grubbers and I love my chickens and don't want to get rid of them." And there'll be two pages of sympathetic folks who will agree.