The Nationalrat is the dominant chamber in the legislative process in Austria. However, the upper house of parliament, the Bundesrat, has a limited right of veto (the Nationalrat canin almost all casesultimately pass the respective bill by voting a second time;  this is referred to as a ''Beharrungsbeschluss'', lit. "vote of persistence"). A constitutional convention, called the  was convened on 30 June 2003 to consider reforms to the constitution, but failed to produce a proposal that would command a two-thirds majority in the Nationalrat, the margin necessary for constitutional amendments and/or reform.