The election silence is a special time provided by law during which any form of electioneering, aiming to promote a particular candidate, a list of candidates or electoral committees is prohibited. The purpose of election silence is to give voters a peaceful, free from political agitation, conditions to consider and make final decision on elections. Due to the numerous examples of violations of election silence on various websites, there appeared many doubts as to the guarantee of the silence on the internet. The aim of this article is to answer the question about the legitimacy of the election silence on the internet. The examples of violations of election silence are taken from the 2011 parliamentary elections in Poland.