More stable governments should help preserve (improve) the financial stability of banking systems by making future public decisions more predictable. In this regard, our study explores the relationship between political stability as measured by government parties’ vote share and banking system stability. Using a sample of 84 countries over the period 2004-2017, the dynamic panel approach confirms that this voting power is only significantly related to bank default risk in presidential systems. An increase in the voting share of government parties probably favors the implementation of the president’s political agenda by reducing the degree of political uncertainty.