. tonight's big -- no huge debate will give candidates a chance to overcome donald trump's bombastic policy free style. and no one needs to do that more than jeb bush. once a shoe-in, a gaffe prone bush is stumbling into this forum. >> i've got a t-shirt that says -- at the jeb swag store that says my dad's the greatest man alive. if you don't like it i'll take you outside. >> knowing what you know now, would you have authorized the invasion? >> i would have. and so would hillary clinton. >> knowing what we know now, what would you have done? >> i would not have engaged.