Transcript for Gov. Chris Christie: 'Mitt Romney's Going to Have to Win This Campaign'
With that, let's bring in new jersey governor, chris christie, who will deliver the convention's big keynote speech tonight. Good morning, governor. Good morning, george. How are you today? I'm doing well. Thank you. We just heard from jon karl. President obama will be campaigning today. The convention is back to business. But you could be taking that podium tonight, just as isaac is making landfall. Have you had to adjust your speech to take account of that? Not really, george. I think my speech has pretty much stayed the way it was intended to be. We're all, obviously, looking closely at what's going to be happening in the gulf. And our thoughts and prayers are with the people of louisiana and mississippi and alabama, that any damage will be minimal. A lot of the party faithful are looking forward to a fire and brimstone speech from you. Is that what they're going to get? Come and watch, george. You know that I'll be talking about the new jersey experience and what that means for the country. What it can mean and promise for the country. There will be other stuff I'll be talking about, too. I'll be ready when I walk out on that stage tonight. The democrats are already ready for you to talk about the new jersey experience. They're pointing out, ahead of your speech, that new jersey is near the bottom of states in unemployment. 48th in unemployment. 47th in economic growth. Yeah. Except in the last 12 months, george, we're ranked fourth in the country in the number of private sector jobs that have been created, according to cnbc. That we've had 90,000 new jobs created since I've been governor. And we're a state that's raised taxes for eight years. We're not going to turn that around overnight. The new jersey comeback has begun. One big advantage the republicans has in this presidential race, is two-thirds of americans, according to our poll, believe america's going in the wrong direction right now. They don't think president obama has done a good job on the economy. But they're far from sold on mitt romney and the gop. Mitt romney's personal brand and the republicans' party brand is under water right now. How do you turn that around? You start to turn it around. Ann romney speaking in primetime, my speech. Paul ryan on wednesday night. And thursday, mitt romney. You've interviewed me before about this campaign. Mitt romney has to win this campaign. To do that over the next 70 days, he has to let the american people see who he is. Put out a bold vision for the future. He's a challenger. You remember how this works, george. Challengers get a late ok. They know the incumbent. And they want to see if they trust the challenger to sit in the oval office. You've pointed out in the past, that he's had a hard time connecting personally with voters. And the governor, in interviews over the weekend, seems he's not willing to show a lot more of himself. Is that a mistake? Well, listen. First of all, I saw those interviews. I don't think that's what he was really saying. I think you've seen him show a lot more of himself, since paul ryan has joined the ticket. I think paul has brought energy to the ticket. He's brought energy to governor romney after a long and arduous campaign. I think americans will start seeing it tonight with mrs. Romney, who no one can speak better, more articulately about the man that he would be and the leader for our country, than ann romney. I think the fun starts tonight. I think the american people start to get a complete picture about who mitt romney is and why he would be a great president. The keynote is a big honor for you. But keynoters have had a mixed history. Some have forgotten. Others like president obama have gone on to be president. What's the one thing you want americans to know about you when you finish your speech and step off that podium tonight? George, I think if the american people watch tonight, leave the speech by saying, that's him, that's who I heard about. Seems genuine to me. I think I will have done my job for me. If they say, I like the vision he's laid out for the country and his party for the next four years, I will have done the job for my party and my country. There's a bunch of things to accomplish tonight. And hopefully in the time allotted to me, I'll be able to do it. We'll be watching, governor. Thank you very much. Thanks, george. A big moment for chris christie.
This transcript has been automatically generated and may not be 100% accurate.