In Brazil too[0]. The numbers are different, but if a petition reaches a certain number of signatures our Congress has to lead to the plenary. You could use the official government website for that. Recently we had a Law called 10 mediated against the corruption[1] that followed this script. Unfortunately, our Congress has greatly changed the proposal. I participated actively in this campaign and I am participating in some other proposals that are being built. What I have discovered is that getting in touch with a congressman so that he or she will sponsor the proposal and defend it in its originality is much faster and with a higher success rate. Unfortunately, we do not yet have a possibility to prevent congressmen from altering the public petition and this allows they to transform something positive into something very bad.

[0]https://www12.senado.leg.br/ecidadania/principalmateria (in portuguese) [1]http://www.dezmedidas.mpf.mp.br/campanha/documentos (in portuguese)