The central events of the Athenian democracy were the meetings of the assembly (ἐκκλησία ekklêsia). Unlike a parliament, the assembly's members were not elected, but attended by right when they chose. Greek democracy created at Athens was a direct, not a representative democracy: any adult male citizen of age could take part, and it was a duty to do so. The officials of the democracy were in part elected by the Assembly and in large part chosen by lot.
The assembly had four main functions; it made executive pronouncements (decrees, such as deciding to go to war or granting citizenship to a foreigner); it elected some officials; it legislated; and it tried political crimes. As the system evolved these last two functions were shifted to the law courts. The standard format was that of speakers making speeches for and against a position followed by a general vote (usually by show of hands) of yes or no. Though there might be blocs of opinion, sometimes enduring, on crucial issues, there were no political parties and likewise no government or opposition (as in the Westminster system). Voting was by simple majority. In the 5th century at least there were scarcely any limits on the power exercised by the assembly. If the assembly broke the law, the only thing that might happen is that it would punish those who had made the proposal that it had agreed to