In the next elections, as a leader of NMSP, he took part in a coalition government with the Bulgarian Socialist Party. He returned to his home country in 1996, formed the political party National Movement Simeon II (NMSP) and was elected Prime Minister of the Republic of Bulgaria from July 2001 until August 2005.

In 1946 the monarchy was abolished as a consequence of a referendum, and Simeon was forced into exile in Spain. Simeon was a six year old minor when the royal authority had been taken to be exercised on his behalf by a regency led by Simeon's uncle Prince Kiril, General Nikola Mihov and the prime minister, Bogdan Filov. Later Simeon served as Prime Minister of Republic of Bulgaria from 2001 to 2005. Simeon Borisov von Saxe-Coburg-Gotha ( Bulgarian: Симеон Борисов Сакскобургготски, romanized: Simeon Borisov Sakskoburggotski, born 16 June 1937) is a Bulgarian politician, last heir to the throne of the Kingdom of Bulgaria, who had never served as reigning Tsar of Bulgaria due to his minor age at the time his father Boris III of Bulgaria died (1943) and the fact that monarchy in Bulgaria was abolished (1946).

Remove national spirit hoi4