"Rush broke for Mitt," means that he gave his endorsement to Mitt Romney. Rush seemed very upset that McCain took South Carolina. There were things in the media that suggested that Rush was becoming irrelevant with South Carolina going for McCain. We must understand that South Carolina has a huge military vote that identifies with the military past of McCain. Many are retired military. McCain may have talked about VA benefits to them to sweeten the deal.
Oh when did that happen?
Please link me to the FR thread about his endorsement of Romney.