In the elections in 2008, the party won 21.0% of the popular vote and 7 out of 33 seats. After having been in the opposition for a short interval after the elections, the Union Party formed a new government in September 2008, and Kaj Leo Johannesen became prime minister.
At the general elections in 2011, the party gained 24.7% of the votes and eight seats out of 33. However, on 10 February 2014, the party gained one more seat in the Løgting, after Gerhard Lognberg who was elected to the parliament representing the Social Democratic Party, joined the Union Party.[4] This happened three months after Lognberg had been expelled from the Social Democratic Party due to some disagreements,[5] making the Union Party the joint biggest party of the Faroese parliament, along with the People's Party.[6]