ɪnðə lˈɛdʒɪslətˌɪv bɹˈæntʃ sˈɜːpə sˈɜːvd æz kˈaʊnsɪlmən fɚðə tˈaʊn ʌv bˈæɹɐŋkˌæbɚmˌɛdʒə ænd lˈeɪɾɚɹ æz nˈæʃənəl tʃˈeɪmbɚɹ ʌv ɹˌɛpɹᵻzˈɛntətˌɪvz mˈɛmbɚ ɹˌɛpɹᵻzˈɛntɪŋ sˈæntændɚ dᵻpˈɑːɹtmənt æz ɹᵻplˈeɪsmənt fɔːɹ kˈɑːŋɡɹəsmən ɹˈoʊdʒlɪˌoʊ aɪˈɑːlə ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ.
In the legislative branch Serpa served as councilman for the town of Barrancabermeja and later as National Chamber of Representatives member representing Santander Department as replacement for congressman Rogelio Ayala in 1974.