Blame for her fathers death from covid19 on the u. S. President. Good to have you with us. So democrats are making their case for a joe biden presidency on the first night of their unconventional National Convention. Former First Lady Michelle Obama came out swinging against donald trump, criticizing his handling of the coronavirus pandemic and his divisive character. Donald trump is the wrong president for our country. He has had more than enough time to prove that he can do the job, but he is clearly in over his head. He cannot meet this moment. He simply cannot be who we need him to be for us. It is what it is. So if you take one thing from my words tonight, it is this. If you think things cannot possibly get worse, trust me, they can and they will if we dont make a change in this election. If we have any hope of ending this chaos, we have got to vote for joe biden like our lives depend on it. Four republicans crossed party lines to endorse joe biden. Former Ohio Governor john kasich, saying they might disagree on policy, but he believes biden can bring the country together. Senator Bernie Sanders made his appeal to the progressive wing of the democratic party, highlighting bidens move to the left on a number of issues he said are now mainstream. Joe biden will end the hate and Division Trump has created. He will stop the demonization of immigrants, the coddling of white nationalists, the racist dog whistling, the religious bigotry, and the ugly attacks on women. The future of our democracy is at stake. The future of our economy is at stake. The future of our planet is at stake. We must come together, defeat donald trump and elect joe biden and Kamala Harris as our next president and Vice President. Cnns senior political analyst mark preston joins me now from washington, d. C. Good to see you, mack. Good to see you, rosemary. All right. So lets look at what all these speeches on the first night of this virtual dnc convention, what they were trying to achieve. Former First Lady Michelle Obama warned voters things could get worse if voters dont make a change in this election, really telling them get out and vote. How likely is it that her words will resonate and encourage americans to do just that . Well, she is an interesting messenger for the Biden Campaign to put out on the fist day in many ways. Could be their secret weapon. When i say that, Michelle Obama is very reserved about how she uses her time, how she uses her likeness. She is only careful only to wade into the political waters when she really, really wants to. I think tonight we saw her do that. And she did that in a way that most politicians cant do it. She delivered her thoughts in a very sincere way. Her requests in a very sincere way. And you have to wonder, are folks who are on the fence, or are their mother, are there young women throughout that perhaps who wouldnt be considering voting, who wouldnt want to take the time, wouldnt think that their vote would count, i think thats who Michelle Obama was trying to reach out tonight. She did so very effectively. Now well see if in fact people will go to the polls, and will she be more involved, rosemary, in the coming months. The fact is Michelle Obama was a good highlight for the democrats to kick off this very bizarre convention week. Yeah, she was the main voice of the night, wasnt she . And of course the latest cnn poll shows this is going to be a very tight race. And it will require all of Bernie Sanders supporters voting this time around rather than staying home as they did back in 2016. Did sanders go far enough in his address, appealing to the far left progressives who dont think the biden harris ticket represents them in any way . Do you think he achieved that, talking about authoritarianism . I think so. And it was interesting too that if you really listen to his speech tonight, i talk to one of Bernie Sanderss advisers right before the speech, and the adviser told me to listen to what Bernie Sanders says when he talks about authoritarianism and talks about his own family. He doesnt often talk about his huge heritage or the fact how his family had to flee europe because of the nazis, but in fact that happened. So Bernie Sanders i think took a note from the obama book tonight. And that note is the sincerity note. If you compared about how he was endorsing joe biden tonight compared to the bitterness of the 2016 race when a lot of people who supported Hillary Clinton didnt think that he did enough, i think youll see night and day. And i do think that you will see Bernie Sanders do whatever he can do, and its very difficult in these campaigning day, whatever he can do to try to help elect joe biden. He doesnt necessarily agree with him, rosemary, on every issue. Health care, for instance. But he looks at him and he thinks that joe biden can at least help preserve these real liberal progressive policies that democrats have pushed for and have been successful over the past couple of years, pushing more to the left. Sees joe biden as somebody who will keep on championing that. And if donald trump wins another term, Bernie Sanders tonight very starkly said to his follower, everything we worked for is going to be lost. Whether thats true or not, we dont know. But still, its a message he tried to get across. He was certainly making the clear message there is a choice of two guys here. You have to work out which one it will soon you. But that is your choice. So republican john kasich, his address of course was designed to convince other republicans that country comes before party. How well did he do with that . And is he the guy to let other republicans know that its okay to vote for biden . He is certainly the guy for some republicans. John kasich is a very interesting fellow, very conservative, extremely smart. But somebody you either like john kasich or you dont like john kasich. Tonight what you saw from john kasich, i go back to this one word, sincerity, this level of sincerity. This is someone who ran for the president ial nomination himself and lost. This is somebody who i remember when i first came to washington was considered one of the most fiscally conservative and smartest individuals on capitol hill. But this is somebody obviously that doesnt share the same republican philosophy, that grounded republican philosophy that donald trump shares. And i think he was making that distinction tonight and trying to tell folks that if you dont necessarily support donald trump, if youre a republican, its okay to come over here to joe biden. I dont necessarily think youre going to see a lot of republicans jump ship, but you could see a lot of people in the middle, and you could see folks like john kasich who say to themselves, you know, at this point, i cant be loyal to my party because of who the nominee. Well see what happens in november. We certainly shall. We will be counting down. Mark preston, always a pleasure. Thank you so much. Thanks, rosemary. Well, a former Senior Trump Administration official and longtime republican is endorsing joe bidens president ial campaign. Miles of taylor served as chief of staff to Homeland Security secretary Kirstjen Nielsen and is one of the highest ranking former officials from the Trump Administration to back biden. In a video message, taylor achoosed mr. Trump of using his office for political purposes. He told us to stop giving money to people whose houses have been burned from a wildfire because he was so rageful that people in the state of california didnt support him and politically it wasnt a base for him. The policies at the border. He said he wanted to go further and have a deliberate policy of rippinger children away from their parents to hoe the parents they shouldnt come to the boarder in the first place. Even though im not a democrat, even though i disagree on key. Im confident that joe biden will protect the country. While joe biden is enjoying the support of a former Trump Administration official, new polling results show hes also maintaining a lead over President Trump, though it has narrowed. Cnns poll of possible, which combines six nonpartisan surveys found biden now leading by a 9point margin nationally. On july 20th, biden had a 12point lead. And while the president is making up some ground, he is still warning about the potential for election fraud, even though there is no evidence of it. Some of his starkest language yet came monday on the campaign trail in wisconsin. Take a listen. We have to win the election. We cant play games. Get out and vote. Do those beautiful absentee ballots, or just make sure your vote gets counted. Make sure, because the only way were going to lose this election is if the election is rigged. Remember that. Its the only way were going lose this election. Well, u. S. House democrats are making the Postal Service crisis a top priority. The postmaster general will testify next week amid accusations the Trump Administration is sabotaging the service to prevent mailin voting for the november election. Cnns Kristen Holmes has more. No, were not tampering. Reporter President Trump today insisting he is not behind recent delays in u. S. Mail. Its been run horribly. And were going to make it good. Reporter and denying he is using the Postal Service to meddle in november election. Wouldnt do that. I have encouraged everybody speed up the mail, not slow the mail. Reporter thats not stopping speaker nancy pelosi, who called the house back early from summer recess and plans a weekend vote to stop the administration from implementing any changes ahead of november. Im all about piecemeal. If we can bring on postal, lets do it. Reporter outrage sparked by postal workers who sounded the alarm that recent changes by trumps postmaster general like cutting overtime and post office hours have slowed delivery times, something the postmaster called, quote, unintended consequences in a recent letter. Documents obtained by cnn also show a plan has been underway to remove nearly 700 high volume mail sorters from postal facilities across the country this year. But the white house chief of staff telling jake tapper on state of the union that will no will be removed before. Thats not happening. Are you saying that sorting machines have not been taken offline and removed . Are you asserting that, that that did not happen . Im saying that sorting machines between now and the election will not be taken offline. Reporter the president today once again attacking the mailin ballot process, with false information on dropboxs, tweeting who is going to collect the ballots, and what might be done to them prior to tabulation . A rigged election . State officials have pushed back on these claims. The clerks empty these things a couple of times a day, actually. And they usually are in very prominent place. I think it would be really difficult to vandalize one of these boxes. Reporter in colorado, where mailin voting has been running smoothly for more than a decade, 75 of voters return ballots in dropbox, but the rest rely on the Postal Service. Now multiple states are considering legal action against the administration and President Trump. I will not allow him to suppress any american and will fight him with all options on the taking. Reporter Kristen Holmes, cnn, washington. The biden team says President Trump has shown his true colors yet again by retweeting russian propaganda. On sunday, the president amplified a tweet that u. S. Intelligence officials have described as a part of a russian campaign. They say its meant to spread false and misleading information about biden and his dealings with ukraine. The biden camp says the release is blatant russian meddling against the former Vice President ahead of the election. Well, a woman who lost her father to the coronavirus created one of the most powerful moments so far at the Democratic National convention. Her scathing rebuke of President Trump. Thats ahead. Ave time to go to the post office they have businesses to grow customers to care for lives to get home to they use stamps. 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Well, its no surprise the most dominating story of the year, the coronavirus is capturing a lot of attention at this weeks Democratic National convention. One of the most compelling moments came when a woman who lost her father to the virus blamed the u. S. President directly. She says her father believed President Trump when he said the virus was under control and would disappear. After the stayathome order was lifted in arizona, my dad went the a karaoke bar with his friends. A few weeks later he was put on a ventilator. And after five agonizing days, he died alone in the icu with a nurse holding his hand. My dad was a healthy 65yearold. His only preexisting condition was trusting donald trump, and for that he paid with his life. And the coronavirus claimed another 445 lives in the u. S. Monday, and the number of confirmed cases is approaching 5. 5 million. Erica hill has the latest from around the country. I wish this when we went into lockdown, we looked like italy. But when italy locked down, i mean, people werent allowed out of their houses. Americans dont react well to that kind of prohibition. Just getting americans to wear masks has been a hurdle in many place, including schools. Theyre not mandatory in georgia, one of nine states where positivity cases topped 10 and where students and staff are now quarantined. Outbreaks in Cherokee County north of atlanta forcing three high schools to suspend inperson learning through at least the end of the month. Nationwide, the number and rate of coronavirus cases in children has been steadily increasing since march. In arizona, more than 100 Staff Members in one district called out sick. School there canceled for the day. I was glad that they have decided to kind of take a pause for monday, because this is going to impact our community as a whole. Reporter multiple schools in two florida districts also adding quarantine orders as others worry they could be next. We do all types of drills for emergencies and tornadoes and fires, and even active school shooters. But there is no foolproof way to have a drill to avoid covid19 infection. Reporter Uncchapel Hill moving all undergraduate Classes Online after reporting several clusters on campus. An entire Sorority House at Oklahoma State is now quarantined. And these images from a crowded party near the university of north georgia sparking concern that school could be next. Were setting them up to fail, and then were going to blame them for being irresponsible. And i think were the ones that are quite frankly being irresponsible by allowing that kind of thing to happen. Reporter deaths topping 170,000 with the country now reporting an average of more than a thousand deaths a day for the past three weeks. And while new cases over the past week are trending down in 20 states, at least a dozen of those are also reporting a decline in testing. Were probably missing eight out of ten people who are contagious. And any decrease in testing is worrisome, because were already not doing well. Reporter a new saliva test granted emergency use authorization by the fda offering help. These tests can be done very rapidly, very inexpensively, lots of them and with a quick turnaround time. And thats a big difference from where we are today. Reporter further evidence communities of color are being hit harder, new analysis of 12 streets published in jama internal medicine finds black, latino and native populations were hospitalized at a disproportionate rate. And vaccine trials have been slow to recruit black and latino participants. Currently just 10 of those who volunteered, despite making up more than 50 of confirm cases in the u. S. Its on us in medicine, in Public Health to build those bridges with communities of color and say, look, these are going to be safe trials, and we need your involvement because we want the know the vaccine will protect not just some americans, but all americans. Reporter erica hill, cnn, new york. William haseltine is a former professor at harvards medical school and school of Public Health. He is also the author of a covid back to school guide. And he joins me now from roxbury in connecticut. Thank you, sir, for talking wi