During his years of exile and after returning to Chile, Claudio Huepe continued to be actively involved in politics, working for the return of democracy. As one of the most left-leaning Christian Democrats (a party that in Chile occupies the political center) he was instrumental in the formation of what later became the Concerted Parties for Democracy; the center-left coalition that defeated the dictatorship and has won all presidential elections since the military rule ended in 1990.
With the return to democracy, in 1990, Claudio Huepe was elected again to the Chamber of Deputies, for the same region he had represented before the coup, now District 46 (Lota, Lebu, Arauco, Curanilahue, Los Álamos, Cañete, Contulmo, and Tirúa), with a 35.93% of the votes.[2]
In 1997, he was appointed Undersecretary at the Ministry General Secretariat of Government (1997–2000) by President Eduardo Frei Ruiz-Tagle. In 2000, the newly elected President Ricardo Lagos named him Minister Secretary-General of Government (2000–2002), While he succeeded as a cabinet-member in completing several important initiatives such as the Chilean Press Law or the Freedom of Religion Law, and in modernizing the image of the Chilean government, his work as the government spokesperson (an additional responsibility of this position) was considered opaque. He was replaced in 2002 by the Heraldo Muñoz, of the Socialist Party.[1][2]
In 2005, he ran again as a candidate for the Chamber of Deputies to represent a different zone (District 41), but was not elected. He was later named Ambassador to Venezuela by President Michelle Bachelet, but presented his resignation in mid-2007, after accepting the political responsibility for unveiling a private conversation with the President on the Venezuelan television channel teleSur regarding the 2006 Chilean vote for the United Nations Security Council.[3][4]
Claudio Huepe died of a heart attack on May 11, 2009, while visiting Caracas, Venezuela.[5]