Complex sentence: In 1990 he ran for the congressman without the support of any politician and got elected with 22,000 votes, but only remained in that position for a year because the Colombian Congress was closed due to corruption and a referendum for a new Colombian Constitution was proposed.
Split into simpler sentences: In 1990 he ran for congressman without the support of any politician and got elected with 22,000 votes. He only remained in that position for a year because the Colombian Congress was closed due to corruption and a referendum for a new Colombian Constitution was proposed.