Finns Party
As a result of the 2017 Finns Party leadership election, Jussi Halla-aho became the party's leader. On 12 June 2017, Sipilä and Orpo declared that they did not see grounds for continued co-operation with the Finns Party, effectively announcing the imminent dissolution of the Sipilä Cabinet. They cited disagreements in the parties' value bases, as well as Halla-aho's newfound leadership of his party from Brussels as obstacles for maintaining the three-party coalition. On the following day, 13 June 2017, a group split from the Finns Party forming a new parliamentary group called Blue Reform (initially "New Alternative"), and declared a willingness to continue in the cabinet. As a result, Blue Reform took the Finns Party's place in the cabinet and the cabinet continued with the same ministers as before, with the Finns Party entering opposition. After the split, the total number of seats held by the government changed a few times due to the shifting allegiance of some Finns Party MPs, but ultimately was settled to 106 seats, of which one is the speaker of the parliament, and as a result is unable to vote.