GO : Santos : Voters must choose ` ` between the end of the war and a war without end '' NEW : Santos : ` ` My pledge is to work for a serious , responsible and lasting peace '' Colombia 's presidential vote will need a second round to determine a winner . Key question voters are weighing : How should government handle the crisis ?
NEW : Santos : Voters will choose `` between the end of the war and a war without end '' NEW : Zuluaga : `` My pledge is to work for a serious , responsible and lasting peace '' Colombia 's presidential vote will need a second round to pick a winner . Key question voters are weighing : How should government handle the FARC ?