In case you think your voice doesn't matter:
Yesterday I recieved a letter from my representative personally thanking me for taking the time to reach out to him and politely discuss the advantages of backyard chickens. He will be voting in favor of backyard chickens when the bill comes to the House floor (and he represents Sugar Land, a "master planned community" where the HOA is a constant menace).
That being said, don't forget to call your rep!
If they're a republican, appeal to the conservative idea of self reliance.
If they're a democrat, appeal to their sense of progressivism and empowerment.
Be polite, concise, and informative.