In local elections, national voting patterns are often not repeated as results show significant incongruence in terms of turnout, party performance and seat shares. Political science explains these various differences with several distinct theoretical frameworks that approach this incongruence from the aspect of voter behavior. The aim of this study is not to provide an alternative for these conventional explanations but to complement them with the detailed analysis of mobilization in an attempt to clear up certain gaps in the models. My main proposition is that parties can mobilize their supporters for the local elections with differing effectiveness producing incongruence in voter turnout and seat shares. In the capital and in the larger cities there is a mobilization gap mainly affecting left-wing voters that causes lower turnout and weaker electoral performance by these parties. This gap can most probably be explained by a combination of social and institutional factors and has a profound effect on election outcomes.