ed o'keefe is on the campaign trail in waterloo, iowa. how is the new poll playing among the campaigns? >> reporter: well, this is the first significant lead change. the fact that biden has slipped to second is notable. he has universal name recognition, but you talk to people in the state and they credit warren and her team for building out an operation that is increasing her support. we shouldn't put too much into polls this early in the cycle, but the polling done by the des moines register through the years is often the one that ends up predicting the winner, which is why this poll gets extra attention. >> that's a good point. the polls a shows that just 1 in 5 iowa voters say they made up their mind about who to support. is that what you're hearing? >> reporter: it is. take the example of a woman we met earlier today who said she would love to see elizabeth warren and pete buttigieg end up on the ticket together, but she's a fan of amy klobuchar. and she's okay with biden too. indecisive voters have 134 days to decide. >> ed o'keefe,

. >>> coming up this morning, ed o'keefe talks with democratic presidential candidate and south indianaayor pete buttigieg about his bus. i'm anne-marie green. this is the "cbs morning news." en. this is the "cbs morning news." i switched to miralax for my constipation. stimulant laxatives forcefully stimulate the nerves in your colon. miralax works with the water in your body to unblock your system naturally. and it doesn't cause bloating, cramping, gas, or sudden urgency. miralax. look for the pink cap. red dress on the first day - bold move. same red dress today - even bolder. fight the fade and keep your red dress red. is it new? no, it's washed in studio by tide. our mission is to provide complete, balanced nutrition... for strength and energy! whoo-hoo! great-tasting ensure. with nine grams of protein and twenty-seven vitamins and minerals. ensure, for strength and energy. dove conditioner can proves it can.ive damage? we treat one brush with dove conditioner and expose both to damaging conditions. the difference is clear. dove intensive repair condioner. >>> our top stories this

cbs news ed o'keefe is on the campaign trail in waterloo, iowa tonight. how is the new poll playing among the campaigns? >> well, adriana, this is the first significant lead change, the fact that biden has slipped to second is notable. he has universal name recognition, you talk to rival campaigns and long time observers in this space and credit warren and her team for building out an operation that is increasing her support. we shouldn't put too much into polls this early in the cycle but the polling done by the des moines register through the years is often the one that ends up predicting the winner which is why this poll especially gets extra attention. >> diaz: that say good point. id, the poll shows that just one in five identify what sloarts say they made up their mient have who to support. is that what you are hearing from voters. >> oh, it absolutely is, adriana, take example of a woman we met who said she would love to see warren and pete buttigieg end up on the ticket but was on her way to an yang event and said she is a fan of klobuchar and if

cheers and applause] ♪ [indiscernible] ♪ [cheers and applause] [indiscernible] >> i'm here with ed o'keefestands a little bit about it. >> can i ask you actually a quick question? you are from texas. [indiscernible] ♪ >> steak fry! steak fry! steak fry! steak fry! [indiscernible] [cheers and applause] >> although i cannot promise that it won't be burned. ♪ [crowd chanting] >> amy 2020! amy 2020! 2020! >> amy! >> 2020! >> amy! >> 2020! >> amy! >> 2020! >> amy! 2020! [crowd chanting] [crowd chanting] [crowd chanting] [crowd chanting] >> 2020. >> amy. >> 2020. >> amy. >> 2020. >> amy. >> 2020. do this?> how do you >> i don't know. >> come on in. yeah. [indiscernible] >> ok. if you were running the grill, what would you have? [cheers and applause] >> amy! amy! amy! amy! [crowd chanting] [cheers and applause] ♪ ♪ [applause] [cheers and applause] [crowd chanting] >> how are you? >> not too bad. [indiscernible] ♪ [cheers and applause] [crowd chanting] i-o-w-a! all the way! >> i thought you might play for a minute. [cheers and applause] ♪ mayor buttigieg: that was a warm day, wasn't it? >> it was

the issue dominated last night's presidential debate, and ed o'keefe explains what they're eeguing over. w reporter: former vice president joe biden today doubled down on his concerns about government-run health care plans being touted by liberal democrats. >> you may like the plan you have. you may not want to go into another plan. >> reporter: last night's debate exposed a rift in the party over whether to expand obamacare, with its mix of private and public insurance, or push for a plan where the government covers everyone's health care, known as cadicare for all. >> under my medicare for all proposal, when you don't pay out of pocket and you don't pay premiums, maybe you have run into people who love their premiums! i haven't. >> reporter: according to sanders' plan, the government would cover all necessary health care costs, including prescription drugs, and patients could see virtually any doctor they wanted without a co-pay. but the option for private insurance would go away. and then there's the cost. estimated at up to $32 trillion over 10 years. >> how do we pay for it? we pay

ed o'keefe says elizabeth warren has been gaining ground. >> we don't know specifically why they're levering harris but we do know people are taking a closer look at elizabeth warren. she's spent the summer releasing a series of policy proposals on all sorts of issues and gets a lot of credit for doing so and providing detail. >> reporter: elizabeth warren in the lead but barely. she's just one point ahead of joe biden and two ahead of bernie sanders. the data doesn't say who the harris deserters are but analysts do say they're twice as likely to pick warren over biden or sanders. harris will try to take her numbers back when she and nine other candidate take the stage for the debate. o'keefe says all eyes will be tuned in to the frontrunners. >> the big subdrama to watch thursday night will be the fact that former vice president joe biden and senator warren will be on the stage for the first time. they'll be standing next to each other by virtue of the fact that they're number 1 and 2 in most surveys. >> we did reach out to the kamala harris campaign to get a comment. they did not reach bac

our ed o'keefe climbed aboard with indiana mayor pete buttigieg. >> reporter: how do you convince everyonehe guy they need to vote for? >> well that. >> need to see me in action. you're going to see in addition to the national conversations i'm having in places like the democratic candidate debates, you're going see me on the ground here in iowa directly making the case to voters. i think people are looking for not only a set of policy, but for a kind of lead they're is going to lead news a very, very different place than this current president. and this is my opportunity to show as well as tell what kind of leader i would be for the american people. >> reporter: buttigieg is using the bus tour to talk up his medicare for all who want it health care plan. >> medicare for all means we take a version of medicare and make it available for every american. i believe that this will be a better option than any of the private plans out there. i also believe americans ought to be able to decide for themselves. >> reporter: the ultimate end goal is a government-run health care system? >> i think tha

ed o'keefe is in iowa. good morning. >> reporter: good morning, dana.ay rights has been a big issue here in the first in the nation caucus state for several years. it's just one of the issues presidential candidates are talking about in their mad dash. >> back when some democrats were talking about civil unions, i was performing marriages in 2004 at san francisco city hall. >> i remember serving under don't ask-don't tell. i remember the weight lifted when that was no longer a threat to my career. >> reporter: candidates took turns explaining how they protect gay, lesbian, and transgender rights. >> donald trump has a strategy. he's got a plan. his strategy is turn people against people. >> reporter: despite having pushed then-president obama to support same-sex marriage, former vice president joe biden had to strongly defend his gay rights record amid questions of his past work with republicans. >> you have also praised vice president mike pence as a decent guy. >> a lovely person. [ laughter ] i came out on "meet the press" in support of gay marriage

ed o'keefe spoke with but inter rom this b >> he's hoping to gain support and talk up this idea becauseoderate alternative for medicare for all and trying to convince iowans to vote for a 37-year-old afghanistan war veteran, small city mayor openly gay. only one in five caucusgoers made up their support and asked the mayor how he plans to win over undecided voters. >> how do you convince ench else over the next 130 so days you're the guy? >> they need to see you in action and you will see in addition to the national conversations i'm having in places like the democratic candidate debates you're going to see me on the ground here in iowa directly making the case to voters. people are looking not only for a set of policies but for a kind of leader that is going to lead us in a very, very different place than this current president is. this is my opportunity to show as well as tell what kind of butti busouror a who want it health care plan. >> medicare for all who want it means we take a version of medicare and make it available for every american. i believe this will be a better option th

spanish, italian -- >> i like the tweet of our own ed o'keefe.e the stairway to heaven. >> witiest common and now everybody is going to be humming that song for the next 24 hours. >>> okay. defending u.s. open women's champion naomi osaka handily won her third round match over 15 yard phenom coco gauff. afterward it was heart warming humility and is getting good attention. osaka encouraged cocoa goff to join in a post match interview. take a listen to this. >> she asked any if i could do the on core interview with her and i said no because i know e was going to cry the whole time but she encouraged me. >> i remember seeing you guys train in the same place as us. for me the fact that both of us made it and we're both still working as hard as we can, i think it's incredible, and i think you guys are amazing. i think, coco, you're amazing. >> addressing the parents. she gave a shout-out to her parents. >> such a lovely moment. the sportsmanship is being commended by fans. billgy jean king said congr congratulations to osaka who was gracious on and o

ed o'keefe is in houston where this debate is being held. >> reporter: we should expect a lot of theront runners, vice president biden and senator elizabeth warren, that will be the main focus tonight. look, if those summer debates were the warm-ups, this is the point where things start to matter much more. more americans paying attention, the fact that there are only ten involved. that will help whittle down the field. one other subplot, california senator, kamela harris kamela harris, usually ranking about 4th right now in surveys. we found an interesting thing in the news tracker poll over the weekend. it goes back and talks to the same people it talked to over the summer and found that 29% of people who had been supporting kamela harris have switched their allegiance to for elizabeth warren. does harris do something tonight for her first time on stage with warren as well to claw back that support or does warren perhaps try to bring more of it into her camp? it will be an interesting die nam tobacco watch for. >> that's an interesting plan of events. what are you hearing how they

ed o'keefe is on capitol hill. what's the significance of these numbers? >> reporter: it's not that joe biden slipping, it's just that elizabeth warren is on the rise. she's generating enthusiasm among democrats who also believe she has a better shot than before at defeating donald trump. >> hello nam democrats! >> reporter: senator elizabeth response at the democratic convention where 19 presidential candidates spoke over the owned. the new cbs news battleground tracker poll shows warren edging out joe biden in the granite state by one point. he has strong support in south carolina with african-americans. in nevada, senator bernie sanders is in front of biden and warren with 29% support. >> we've got a revolution to make. you ready to do it? [ cheers ] >> reporter: the poll also finds that warren is picking up the most support from voters changing their minds. for example, 29% of voters who previously support california senator kamala harris have switched to supporting warren. it was a rough weekend for harris who had to apologize after a man attending on

ed o'keefe is covering campaign 2020 in waterloo, iowa. how is biden reacting to the pressure? >> reporter: biden was initially angry over the weekend but now the campaign is trying to spin this issue to his advantage. arguing it's him president trump is most worried about running against in 2020. joining an out of work picket line sunday, joe biden pointed the finger back at president trump. over the weekend the former vice president slammed the president over reports he pressured the ukrainian leader to investigate unsubstantiated accusations against biden and his son hunter, who once served on the board of a ukrainian energy company. >> he knows i'll beat him like a drum. >> reporter: biden is calling for the house to investigate but he stopped short of mentioning impeachment. >> i'm calling for the president to release the transcript of the call. let everybody hear what it is, see what he did. >> reporter: over the weekend in iowa, other democratic contenders went further. >> we need to absolutely, right away, begin impeachment proceedings. he's got to go. >> how many crime

ed o'keefe is in houston where he covered the debate last night. good morning. who set themselves apart, and how did they do it? >> reporter: well, tony, the differences last night were pretty clear on some issues. over three hours, perhaps the differences most stark between those right at center stage. the national front-runner, joe biden, a moderate, sandwiched between two liberals, senators elizabeth warren and bernie sanders. > houston, we have a problem. >> reporter: a battle of the ig-10 democrats in houston focused especially on the top fore of concern -- health care tsd how to pay for it. >> costs are going to go up for reporter:individuals, and costs re going to go up for giant corporations. >> reporter: former vice president joe biden and other natorstes repeatedly pressed senators elizabeth warren and bernie sanders for how they he employ for their medicare for ou negot. ally friend from vermont thinks that the employer's going to give you back if you negotiate as union all these years, got a cut in wages because you got insurance. they're going to gi

o'keefe is in houston tonight. so, ed, biden's still the front- runner, but any indication tonight who is trying to gain ground? >> reporter: well, certainly senator warren because recent polls, including our own, show that she's gaining on the former pce president. the biden campaign told us today that he'll argue while warren dnd other democrats have bold ideas on health care or climate change, the country needs his more practical solutions to actually be implemented. one other note: warren told us earlier this week that she will continue to do what she's been nging-- trying to convince f them and their families. >> o'donnell: and, ed, the d,mocrats chose the lone star state for a strategic reason, right? >> reporter: that's right. consider the history. no democrat has won here since jimmy carter back in 1976. so democrats are trying to win the state's 38 electoral votes by focusing especially here in houston. it's the nation's soon-to-be third-largest metropolis. that's why they're willing to endure the heat and humidi