Iowa to kick off Republican nomination race as icy weather tests Trump
                        
                                                    
                                
                                
                                
                                
                                
                                    Voters venture into sub-zero temperatures Monday to kick off the Republican presidential nomination race with the Iowa caucuses, the first major test of whether runaway front-runner Donald Trump is as much of a sure thing as he appears.                                
                            
                        
                        
                                                    
                        
                        
    
    
        
            
            
        
        
    
                        
                            Voters venture into sub-zero temperatures Monday to kick off the Republican presidential nomination race with the Iowa caucuses, the first major test of whether runaway front-runner Donald Trump is as much of a sure thing as he appears.