reporter: let s start with the u.s. senate race because that s really where we re going to see the stage set, victor, for what it will look like in november for control of the u.s. senate. this is essentially on the republican side because the incumbent here is unchallenged. the republican side is seeing a two-man race, the first is adam laxoff, the former attorney general, he has trump s endorsement and he believes that he is going to be the candidate. he has been delivering a closing message of economics and saying that he is looking to the general and to attack the democrat who is in office, but he s seeing a challenger, a underdog, his name is sam brown. he is a retired army captain, and brown says that he has grass roots support, and he is counting on dissatisfied republicans who might push him over the line. take a listen. it s tough.