[2] According to Sitompul, he spent thirteen years of his childhood in Banda Aceh, as his father who served in the Indonesian National Armed Forces was assigned there.

[4] His intellectually disabled first son Christian Sitompul from his first marriage is an athlete, and won a gold medal in swimming during the 2011 Special Olympics World Summer Games.

[8] He then left Golkar and joined the Democratic Party, successfully securing a seat in DPR from North Sumatra's 3rd district.

[15] The proposition was challenged and attacked by many, including from Constitutional Court Chief Justice Mahfud MD, and Ruhut later noted that SBY rejected the idea.

[2] For the 2017 Jakarta gubernatorial election, Sitompul endorsed and campaigned for the Basuki Tjahaja Purnama – Djarot Saiful Hidayat pair in direct opposition with his party, which supported Agus Harimurti Yudhoyono.

Due to this, he was fired from the Democratic Party's supervisory board and he declared his intent to leave the legislative body.