Making Big Changes
A kingdom's government type is meant to stick, but this offers GMs a story-driven regime-change arc or a simple retcon.
Parent page Step 4: Choose a Government
In Kingmaker, a kingdom's government type cannot be altered once chosen. Should the GM wish to allow a full regime change, it should cause significant events involving an adventure of its own, or at the very least should force the PC leaders to endure several Kingdom turns of anarchy. A full exploration of the story potential of regime changes are beyond the scope of these rules and of the Kingmaker Adventure Path.
That said, if the PCs are seriously unhappy with a choice they made earlier regarding their kingdom's government—or their sponsor or initial capital for that matter—you should consider simply letting the players retcon their choices and rebuild the kingdom with a new choice of government for the sake of keeping your campaign going!
Pathfinder Second Edition material on Narrative Nexus is used under the ORC License or the Open Game License v1.0a, with each entry's notice naming the license that applies. Paizo, the Paizo golem logo, and Pathfinder are registered trademarks of Paizo Inc. This product is not affiliated with or endorsed by Paizo Inc.