Your opinions on the issue have no basis in facts. The country is not degrading into a giant shantytown. Most of the nation's poor are much better off than they were a decade prior, which is why they keep electing him. All fluff and no substantive statistics or polls.
Colombia's instability is due to a strong, conservative paramilitary presence and illicit cocaine/heroin production. Heroin production in Latin America has increased tenfold, creating even more wealth and influence for the drug lords.