CNN CNN Newsroom With Poppy Harlow September 6, 2015 21:20:00
She said she regrets her decision to use that private e-mail server. at the same time, bernie sanders is really striking a cord with a lot of these voters. and add intohe mix, joe is actively thinking about running. it's a much different labor day weekend than hillary clinton ever expected at this point of her candidacy. >> it's also very interesting because biden is still rating in the polls. let's switch gears a little bit. scott walker is taking a huge hit in these polls. seeing something like a 14% dip in iowa since july. how is he reactingo that? >> reporter: governor scott walker of wisc...