>> reporter: trump's slam on bill clinton's marital infidelity comes a week after her husband hits the campaign for her next month. it comes as a preemptive strike on one who is regarded as one of the best campaigners. it suggests that trump feels secure enough on top of the gop field to take on the leading democrat. trump and clinton are neck and neck in a hypothetical match up. it doesn't hurt that clinton is a republican primary past time popular among voters. >> thank you. let's go to political reporter tom lobianco in washington. tom, hillary does well among women. is this his way of taking out her legs on that part of the electorate? >> sure. they have to fire these folks up. what is happening with trump is