With growing fiscal deficits income growth caused by political efforts may be suspicion because of the public bad nature of privileges that deteriorates the fiscal situation. To avoid the fiscal crisis, the deficit growth must be tuned with consolidation possibilities. Voluntary cooperation with fiscal consolidation serves as overall public goods, alleviating the increasing fiscal deficit. By incorporating the optimizing consolidation behavior of the more concerned and less concerned interest groups with respect to the fiscal consolidation in a political economy, we shall show that income growth caused by political efforts in fact may worsen even the welfare of the less concerned interest groups if the consolidation technology is not effici...