CNN CNN Newsroom With Poppy Harlow January 2, 2016 22:13:00
In iowa is more disputed. with iowa caucuses less than a month away, cruz is gaining on the billionaire. the republican senator is up with an ad there selling his conservative credentials and he starts a six-day iowa bus tour on monday. to help blunt cruz's rise an stay on top. trump says he'll start spending at least $2 million a week on his own advertising. >> i'm going to be doing big ads in iowa, new hampshire, south carolina and they're going to be very substantial and i think they're very well done. i've seen the first two or three of them. very proud of them. we're going to be talking a...