Boyko Metodiev Borisov is a Bulgarian politician who was a three-term Prime Minister of Bulgaria, serving from 2009 to 2013, 2014 to 2017, and 2017 to 2021, making him Bulgaria's second-longest serving Prime Minister to date. Despite leaving office, Borisov remained as the leader of the GERB party and later returned to politics by becoming a member of the National Assembly, which he is to this date.

Parliamentary elections were held in Bulgaria on 5 July 2009. With 40% of the vote, the decisive winner of the elections was the established in 2006 personalistic party of Boyko Borisov, GERB. The Socialist Party, in power before the election, was in second place, with around 18%. Оnce-ruling National Movement Simeon II did not cross the 4% threshold and won no seats. The turnout was 60.6%, one of the lowest ever. Following the election, GERB leader Boyko Borisov became Prime Minister. Just like all the previous parliamentary elections since the fall of communism, the government was not re-elected.