[2][3] After the Government reached a peace deal with the M-19, Pabón returned to the country, re-entered society and entered politics, first as a Delegate to the National Constituent Assembly in 1991, then as Mayor of Yumbo from 1998 to 2000, and as Senator for Congress in 2003 and 2004.
He temporarily stepped down leaving Abraham Rubio Quiroga as interim Mayor of Yumbo before the next elections, and was finally replaced by Alba Leticia Chávez Jiménez.
His run for Mayor of Cali, however, proved unsuccessful, losing to John Maro Rodríguez Flórez.
During his time as Senator, Pabón voted in favor of proposed legislation that would have legalized recognition of same-sex unions in Colombia, however the proposed law that had the backing of prominent liberal senators like Piedad Córdoba could not amount the necessary votes to pass.
[6] In 2005, Pabón left the Independent Democratic Pole, a left leaning coalition party which he himself had help found, among other reasons, Pabón was a strong supporter of the conservative leaning President Álvaro Uribe Vélez and believed that the Pole was taking "leftist radicalism of the maoist and procuban era.