This study aims to clarify why the Liberal People’s Party and the Left Party at multiple occasions have changed in their respective approach to the government alternatives in connection with the formation of government in Sweden during the period of 2019-2021. The study’s focus emphasizes on determining the two parties' different motives which can explain why the parties have acted in a particular manner. Relevant data that provide motivations for the parties’ actions have been collected and analysed. The parties' motivations have then been applied to four different theoretical models provided by Wolfgang C. Müller, Kaare Strøm and Gunnar Sjöblom. The different models each suggest different motives, office-seeking, policy-seeking, vote-seeking, and intraparty cohesion. The questions formulated to answer the aim of this study is as follows, how can the Liberal People’s Party as well as the Left Party’s change in their respective approach to the government alternatives be explained by the office-seeking, policy-seeking, vote-seeking, and intraparty cohesion models? The main result of the study shows that there is not a single motive behind the parties' changed approach to the government alternatives, rather than the different motives combined that explain the change in the party’s behaviour.