Coalition-building is significant in politics as it allows diverse groups with shared interests to unite for a common purpose, enhancing their influence and effectiveness. In parliamentary systems, parties may need to form coalitions to achieve a governing majority, which encourages collaboration and compromise among different factions. This process can lead to more comprehensive and representative policy-making since multiple perspectives are considered. Additionally, successful coalition-building fosters stability and resilience in governance, as it often helps to mitigate conflicts and broaden the support base for legislation, ultimately reinforcing the democratic process.