Political parties create coalitions through strategic alliances with other parties or factions, particularly in multi-party systems where no single party achieves a majority. This process often involves negotiations to align on common goals or policies, allowing them to collectively influence legislation. Parties may also share resources and campaign support, further strengthening their joint position in governance. The resultant coalition can lead to more stable governance by uniting diverse interests, although it can also complicate decision-making due to divergent priorities.