Open political discussion between citizens is a cornerstone of democratic theory and contextual accounts of political behaviour. It provides both a means through which individuals can discover what their peers think and a forum within which they can rationalize, explain and perhaps modify their own opinions. Much previous research has focused on the potential of political conversation as a means of influencing others and of converting holders of minority views to the opinions of the majority. However, theoretical accounts of political conversation also stress its potential impact on more systemic attitudes towards democracy, including the development of tolerance for divergent views and lifestyles. The article provides an evaluation of these potential effects in the context of recent British politics.