Dropped out, ensuring that donald trump will be the partys first nominee since eisenhower to run with no political experience. The republican race began with a gaggle of 17 candidates. Ted cruz quit last night after a loss in indiana. Late today john kasich joined him. Well talk to our cbs News Political Team about where all this goes from here. But first, it was 11 months ago that trumps rise to the top began with a ride to the bottom. I am officially running for president of the United States, and we are going to make our country great again. When mexico sends its people, theyre not sending their best. Theyre bringing drugs. Theyre bringing crime. Theyre rapists. How can you succeed when you say things like that . Well, again, gail, if the question is how can you become president . You cant by saying things like that. You call women you dont like fat pigs, dogs, slobs and disgusting animals. Your twitter account only rosie odonnell. I have pledged to support the republican nominee, and donald trump is not going to be the republican nominee. The media knows donald trump cant win. Dont worry about it, little marco. Gentlemen. Breathe, breathe, breathe. Lying ted. You can do it. I am getting so many calls from people in the Republican Party that were totally against me. They want to join the team. Im proud to be here to endorse donald trump . Are you ready to make America Great again . I dont know anything about david duke. I dont know anything about white supremacistings. I dont know. Did he endorse me . I hate to say it. Im becoming mainstream. All these people are now endorsing me. You will be so proud of this country very, very soon. Thank you all. Thank you very much. Thank you. Pelley 11 months of donald trump in just about one minute. The democratic race is just about over, as well. Bernie sanders won in indiana last night, but he essentially split the delegates with Hillary Clinton, and now she has 92 of the delegates that she needs for the nomination. Earlier today i asked sanders about his future. Senator sanders, let me begin by acknowledging that i was dead wrong after our interview. I suggested that New Hampshire would be your last victory party, and youve had 17 victory parties since then. But if i was wrong then, isnt the party over now . Well, i really dont think so. I think we have a path toward victory. I admit that it is narrow path, but we think everybody in this country, people in california, in kentucky, in West Virginia have a right to determine who they want to see as president of the United States and what kind of agenda they want the Democratic Party to have. Were going to fight, scott, for the very last vote we can get. Pelley is defeating trump the democrats highest priority . Absolutely. I think mr. Trump would be a disaster for this country. Pelley but are you now standing in the way of defeating donald trump . No. On the contrary. Look, my candidacy, what we call the political revolution, has energized millions and millions of people, working people, young people. The way democrats win elections is when the voter turnout is high, when people are excited, and thats what we are doing. Pelley to those who say that secretary clintons delegate lead is insurmountable, you say what . I say that we have a narrow path. Its a tough hill to climb, i acknowledge it, but i think we have a shot. A lot of the super delegates, i hope that they will listen to the people in their state and say, hey, we delivered for bernie with landslide numbers. You as super delegates have got to listen to us. Pelley but second secretary clinton has won by far the largest number of votes. How do you convince super delegates they should go your way . I think we make the case that, a, if you look at virtually all of the polling nationally and in battleground states, Bernie Sanders does much better against donald trump than does Hillary Clinton. Pelley do we have your word in this interview that youre not going to drop out before the Democratic Convention . Absolutely. We have made that commitment. Im going to be in it until the last vote is counted. Pelley senator Bernie Sanders, thanks very much for being with us. So whats next . Lets turn to our political team, Major Garrett is covering the republicans. Nancy cordes is with the democrats. And we have John Dickerson in washington, the anchor of face the nation. Nancy, let me start with you. How does the Clinton Campaign go forward from here . Well, they work to distill their message against donald trump. You heard Hillary Clinton today calling him risky. She called him a loose cannon four times. Nuclear weapons are another phrase youll hear a lot. Shell argue that hes not steady enough to have his finger on the button. One Campaign Aide told me today theyre basically going to break their message down into three parts. Number one, he cant unify the country. Number two, he cant be commanderinchief. And number three, he isnt out for anyone but himself. Pelley yet, major, he defies all expectations. How do you see the Campaign Going ahead into november . Senior trump advisers have told me if trump is the issue, they lose. What has to be the issue and what trump has to guarantee is projected as the issue, the obama administration, Hillary Clintons role in it, insider versus outsider, establishment politics versus a new framing of politics. If trump does that, his closest advisers believe the way he has remade the republican math in the primaries can be remade in a general election. He can run competitively in places republicans havent for a good, long while and change the dynamic of the race. Pelley John Dickerson, how do you see trumpclinton . Well, that word risk keeps coming in all the conversations i had today. The way some Establishment Republicans are coming around to trump saying big risk but big reward. So they believe that he can put some new states in play. This is the most optimistic case, of course. Then there are others today who were talking about the dangers and unpredictability and volatility of trump. They are still, a lot of republicans in washington, trying to figure out how much to get behind him and how much to run on their own kind of ticket and just hope that things dont come crashing down. Pelley nancy, is donald trump the candidate that Hillary Clinton wanted to run against . Hes very unpredictable, and her campaign acknowledges tha. It perhaps would have been easier to run against someone like ted cruz. What they argue, though, is that they have some advantages that all of his republican opponents didnt. First of all, they come out of the gate against him pointing out his flaws in a way that a lot of the republicans were afraid to because, a, they were afraid he would train his fire on them, and, b, they wanted his supporters. Hillary clinton isnt worried about that. So she will make the case on issues and on personality in a way that some republicans only did when it was too late. The other thing the Trump Campaign has to begin working on is the Vice President ial running mate. That formal vetting process hasnt begun. There isnt a committee. There isnt a single veteran looking over it, but the process will begin in the next couple weeks. Pelley finally, John Dickerson, one of the fascinating things about this matchup is both of these candidates, according to the polls, are disliked by a majority of the american people. Thats right. And were going to see potentially some of these big outside groups spending money fast to define donald trump, which means this race in its initial stage may be ugly from the start, and it may just keep getting uglier as they trade attacks back and forth between each other. Pelley been plenty ugly already. John dickerson at face the nation, nancy cordes, page garrett, thanks so much. Youre welcome. Pelley in another big story today, the largest automotive recall in American History has more than doubled. An additional 35 to 40 million takata air bags have a deadly flaw. Jeff glors following this. This issue is urgent. On march 31st, we had the 10th confirmed fatality in the United States. Reporter administrator Mark Rosekind said today the effort to replace defective takata air bags has to move faster, even though the task is monumental. Replacements need to be specifically engineered for each of the affected models. Reporter the problem is ammonium nitrate, a volatile chemical the Takata Corporation started using 15 years ago to cut costs. Ammonium nitrate breaks down over time, especially in high heat, high humidity climates, and can cause the air bag inflator to malfunction, potentially sending shrapnel through the vehicle. Over eight million inflators have been replaced so far, but thats less than 12 of the total inflators now involved. Making the fixs have not been easy. Drivers have been calling and waiting. Hundreds of injuries have also been linked to the faulty inflators, including the air bag explosion that left a hole in angelina sujatas chest. Everybody kept telling me, air bags dont do that. Thats the problem. These ones are, and thats not right, and thats not okay. Reporter at the current rated, the air bags fixes wont be completed for more than three years. Rosekind said today he sympathizes. My family has a vehicle with a takata inflator sitting in our driveway, so i fully understand the frustration. Reporter there are questions about whether takata, based in japan, can survive this crisis long term. If they cant, scott, it is not known who pays for the tens of millions of fixes that still need to be made. Pelley jeff glor, thanks for much. In fact, we have a list of all these recalled vehicles on our web site, cbsnews. Com. Today barack obama gave the Good Housekeeping seal of the president to the troubled waters of flint, michigan. Jericka duncan is there. Can i get some water . Reporter before a crowd of 1,000. I really did need a glass of water. This is not a stunt. Reporter . President obama took a sip of flints filtered tap water, assuring the people there that he cares. Ive got your back. Not too long ago i received a letter. Reporter the president singled out eightyearold mari copeny. Mr. President. Reporter she wrote him a letter in march expressing her concerns about the water. How would you describe the flint water . Its nasty. Reporter why it is nasty . It gives you bad rashes and headaches. Reporter flints water crisis began two years ago after the city switched its water supply from detroit to the flint river to save money. The water wasnt treated for corrosion, causing lead to leech from aging pipes. Three government workers have been charged with misconduct and conspiracy to tamper with evidence. One of them was arraigned today and pleaded no contest. Though officials now say filtered tap water is safe, many like paris james dont believe it. When they said it was okay, it wasnt really okay. Reporter the single mothers daily routine begins at 6 00 a. M. Her three children get ready for school using bottled water. She drives them 20 minutes outside of flint to her parents house to bathe. So you refuse the pay your water bill . Uhhuh. Why pay for poison . Reporter to date the city has handed out more than 24 million bottles of water and over 100,000 filters. Scott, the mayor says he wants the replace all the pipes, but right now there is just not enough money to do that. Pelley Jericka Duncan reporting. Jericka, thank you. There is a terrible fire in canada that has forced the evacuation of a city of 90,000 residents. Hot weather and drought set off the inferno consuming fort mcmurray. Vinita nair is following this. Reporter with a sudden shift in the wind, the fastmoving fire changed direction and exploded into a raging inferno. It tore toward the city center. Lets gosh, lets go, will rest go reporter frantic residents had only a few minutes to try and escape the flames. Im terrified. Im very scared. Im very nervous. I dont know if ill have a home to come back to. Reporter in the chaotic evacuation, traffic was gridlocked on the only highway out of town. Some motorist took five miles to travel just 12 miles while walls of flames burned a few feet away. Some reported hearing popping sounds as both cars and campers left behind exploded into flames. At least 1,600 buildings have been destroyed and one neighborhood was completely incinerated. Fire chief darby allen. Its been the worst day of my career. The people here are devastated. Everyone is devastated. 2 community is devastated. This is going to go on. This is going to take us a while to come back from. Reporter sadly were getting word of fatalities now. A highway accident during the evacuation. Unseasonbly high temperatures and strong winds can make it worse again tomorrow. Scott . Pelley vinita nair following developments. Vinita, thank you. Federal drug agents have joined the investigation into princes death. And well remember a navy seal who gave everything for his country. When the cbs evening news continues. I thought i neededuggled cigarettes to cope. 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Whats in your wallet . Pelley tonight weve learned that federal Drug Enforcement agents are investigating who provided prescription painkillers that were found in the home of prince. This comes as a doctor claims that he was working to help the rock legend with drug addiction. Jamie yuccas is in minneapolis. Reporter in the last 24 hours of princes life, the singer was preparing to silence an addiction, according to dr. Howard corn kornfelds attorney dr. William muazy. Dr. Kornfeld felt his mission was a lifesaving mission. Reporter dr. Kornfeld is a nationally recognized Addiction Treatment specialist who runs a facility in california. Muazy says on wednesday, april 20th, his client received a call from a member of princes inner circle who described him as suffering from a grave medical condition. He set into motion a plan to get prince to a doctor in minnesota on thursday morning. Reporter kornfeld sent his son andrew to minnesota on a red eye flight to walk prince through the Recovery Program at his home thursday morning. Thats when the singers body was discovered. One of the Staff Members started screaming. Andrew heard the screams and went to the elevator where he saw that prince was unconscious. Reporter in the transcript of the 911 call, Andrew Kornfeld tells the dispatcher, were at princes house. The person is dead here and the people are just distrawghts. Muazy says andrew had a supply of Addiction Treatment medication with him. No drugs were ever administered. There was never any intention of drugs being administered. Reporter Andrew Kornfeld has been questioned by investigators. He says those medications were to be delivered to princes local doctor, but, scott, if authorities dont believe him, he could be criminally charged. Pelley jamie yuccas tonight. Jamie, thank you. We have a rare peek inside a country that few americans are allowed to visit. 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