 A Union of Democratic Forces deputy and member of the Commission of Law-related Issues in the 38th National Assembly of Bulgaria in 1997, Beronov became a member of the Constitutional Court in the autumn of the same year and was unanimously elected as its chairman after the death of then-chairman Hristo Danov in October 2003.His wife Anna is a professor at the Varna Medical University and his son Kamen is a mathematician, doctor of Kyoto University and a lecturer in Germany.In 2006, Beronov was nominated as an independent candidate for President of Bulgaria supported by right-wing parties such as the Union of Democratic Forces, Democrats for a Strong Bulgaria and the Democratic Party, together with vice president candidate Yuliana Nikolova.