our top story this hour, officials in wisconsin say five people are dead and more than 40 injured after a vehicle plowed into a crowd at a christmas parade in the town of waukesha. this is video of the aftermath showing people being treated at the scene. police say they have a person of interest in custody, and there is no active threat to the community. it is not clear yet whether the incident was an act of terrorism. we will have much more on this story at the top of the hour. well, it's a big win for venezuela's socialist party and chile is headed for a polarizing presidential runoff. we've got the latest results from both countries. stefano will have the details from caracas. but we begin with cnn's rafael