Two women vie for Mexico's presidency amid polarization, spiralling violence
                        
                                                    
                                
                                
                                
                                
                                
                                    Mexico goes into Sunday’s election deeply divided: friends and relatives no longer talk politics for fear of worsening unbridgeable divides, while drug cartels have split the country into a patchwork quilt of warring fiefdoms. The atmosphere is literally heating up, amid a wave of unusual heat, drought, pollution and political violence.                                
                            
                        
                        
                                                    
                        
                        
    
    
        
            
            
        
        
    
                        
                            Mexico goes into Sunday’s election deeply divided: friends and relatives no longer talk politics for fear of worsening unbridgeable divides, while drug cartels have split the country into a patchwork quilt of warring fiefdoms. The atmosphere is literally heating up, amid a wave of unusual heat, drought, pollution and political violence.