The Act of Succession adopted by the Riksdag of the Estates efficiently altered the course of the Swedish monarchy by declaring Jean Baptiste Bernadotte as the successor to King Charles XIII. Bernadotte, a field marshal in Napoleon's army, was unexpectedly chosen due to his reputation as a capable leader and a promise for stability in Sweden after years of conflict. Following the defeat of Sweden in the Finnish War and subsequent territorial losses, the country faced internal challenges and required a new kind of leadership that could unite its people and navigate the complex political landscape of early 19th-century Europe.

With Bernadotte's selection as heir, the Swedish monarchy experienced a blending of nobility and military prowess. This act reflected both the nobility's desire to solidify a royal line that could ensure national unity and continuity and the growing influence of commoners and military leaders in governance. Bernadotte later ascended to the throne as Charles XIV John, marking the beginning of the House of Bernadotte, which continues to this day. His reign helped modernize Sweden and ensured its neutrality during upcoming European conflicts.

Bernadotte's choice was also notable because he was a foreigner, the son of a farmer from Pau, France. Not only did this reflect Sweden's flexible approach to monarchy, but it also highlighted the significant changes occurring in Europe as nations sought effective leadership in a rapidly evolving geopolitical environment. His understanding of military affairs and diplomacy was an asset for Sweden, especially during a time when European borders and power dynamics were in flux due to the aftermath of the Napoleonic Wars.