eight points behind him is carson. carly fiorina is up from where she was last tigme. let's go to south carolina and sara murray for the latest on donald trump. >> reporter: donald trump fielding questions in a more serious forum in columbia, south carolina. getting a hint at what middle class can expect from him. >> i will put in a tax plan next week. it will be a great plan with a major reduction in taxes for the middle class. you watch. >> reporter: an aide to the campaign says we can expect that tax policy next week. here in south carolina, trump seemed he was trying to get his groove back. he did that by coming out swinging against nearly all of his gop rivals. the newest is marco rubio. he called the senator a