Starting right now on ABC's "This week" -- Hillary's choice. I'm going to decide when it feels right for me to decide. Because -- By the end of this year? Her biggest hints yet on 2016. New answers... See More
Starting right now on ABC's "This week" -- Hillary's choice. I'm going to decide when it feels right for me to decide. Because -- By the end of this year? Her biggest hints yet on 2016. New answers from Diane sawyes exclusive interview. Plus, our new poll reveals Hillary's biggest weakness. Firing back. We still get an American soldier back. As outrage grows, brand-new details from our global team at guantanamo bay and in Qatar, where the freed Taliban prisoners now live in luxury. Plus, world cup wind-up. We're live in Brazil, as a global celebration, four years in the making, kicks off. From ABC news, "This week" with George stephanopoulos begins now. Good morning. It's been a packed week in politics and we begin with Hillary Clinton, as she sets to barnstorm the country with her new memoir, hard choices, we have a first look at her exclusive interview with Diane sawyer. A poll shows Hillary Clinton has a commanding lead for the democratic nomination. 7 in 10 democrats want her to be their candidate. And her time as secretary of state has boosted her standing with the broader public, 67% of Americans think she's a strong leader, 60% say she's honest and trustworthy and 59% believe she has new ideas for the country's future. The top political question right now, Hillary's personal future. When are you going to decide whether you're running for president? You know, when I'm going to decide when it feels right for me to decide. Still by the end of this year? Well, you know, certainly not before then. I want to kind of get through this year, travel around the country, sign books, help in the midterm elections in the fall and then take a deep breath and then kind of go through my pluses and minuses and what I will and will not think about by making Probably not announced until next year? I'm not positive about that. The way I make decisions that's probably likely. I know it's a personal decision, but if you can do that -- if you can do that, you see a path and can do, do you have to do it? I have to make a decision that's right for me and the country. But is the party frozen in place waiting for you? No, people can do whatever they choose to do on whatever timetable they decide. But are they disadvantaged waiting for you? You know, bill Clinton started running for president officially in like, September, October of 1991. I don't think that's a, you know, real concern. People will do what they think is best for them and whether they choose to take the step is very personal for everybody. And ultimately, it has to be for you, too. Right. Absolutely. While Clinton considers her final decision, it seems like the campaign has already begun, with questions about her age and health raised by top republicans, like Karl rove. You would not be human and not have a serious brain injury like this was and take into consideration if you're thinking about what she's doing. How serious was it? It was, you know, I think a serious concussion. The clot in addition, if clot had dislodged -- Well, that was a scary point. You had trouble with vision. Because of the force of the fall, I had double vision for a short period of time and I had some dizziness. So no lingering effects? No. You would release your medical records if you ran for president? Absolutely. And what would you like to say to Karl rove about your brain? That, I know he was called bush's brains in one of the books written about him and I wish him well. Age? Age, yes. Isn't it great to be our age. Mitch Mcconnell said at one point, 2016 would be the return of the golden girl. That was a very popular, long-running TV series. There will also be scrutiny of Clinton's record, especially the last four years as secretary of state. No surprise it's polarizing. Our new poll shows that 90% of democrats think she did a good job, only 27% of republicans. And there's bipartisan concern about how she handle the bengha benghazi. 13 hearings, as you pointed out, 25,000 documents turned over, there's going to be another hearing in the house, are you going to testify? Well, that's going to be up to the people running the hearing, I'm not going to say one way or another. We'll see how they conduct themselves. Whether or not this is one more travesty of the loss of four Americans or is this in the best tradition of congress. You can watch Diane's entire interview, a one-hour primetime special, right here on ABC tomorrow at 9:00 eastern.
This transcript has been automatically generated and may not be 100% accurate.