correspondent katy watson is in bogota and explained the issues that separate the two candidates. these elections have divided colombia. in this, the second round, voters have a choice between two very different candidates. on the right, relative political newcomer, ivan duque. he is the business pick, keen on boosting investment and economic growth here in colombia. and gustavo petro, a former rebel with the now defunct m19 movement and a former mayor of bogota. he had has made fighting inequality and corruption the heart of his campaign. the fact that gustavo petro has got this far is a big dealfor colombia. this is a politically conservative country and since 2016, the left has become legitimised, it has not been as associated with violence as it once was. it still faces big challenges. people here are still nervous of the left after more than 50 years of conflict. add to that the situation in venezuela. the right has capitalised on gustavo petro's leftist policies, saying that if...