Leftist candidate the front-runner in Mexico's presidential election

Voters in Mexico are gearing up for a major presidential election. Leftist front-runner Andrés Manuel López Obrador, also known as ALMA, seems poised for a sweeping victory. However, he'll face a series of challenges ahead including President Trump, trade, the border crisis and a spike in deadly violence across Mexico. CBSN contributor and Signal newsletter writer for GZERO Media, Willis Sparks, has more.