You probably remember the tense moment saturday when a man rushed donald trump. Well today that man, thomas demassimo was charged with a federal crime, entering a secret service restricted area. Now to the democrats, Hillary Clinton won at least four more states last night. She now has nearly 2 3 of the delegates she need for the nomination. Here is nancy cordes. Thank you, florida thank you, North Carolina thank you ohio clinton had more thanking to do than her own campaign had expected. She swept four states by as much as 31 points. A feat sanders did not acknowledge at his rally. Next week, arizona has a very important election. We will win. Reporter in a statement the vermont senator insisted he is still on a path to win the nomination. And that the primary calendar favors us in the weeks and months to come. But, thats also what he said before last nights blowout. In a memo today, the Clinton Campaign laid out the odds against sanders. Nearly half of the remaining pledge delegates are in just three states. California, new york, and pennsylvania. Senator sanders would have to win them by 20 points. And rack up a string of victories just to pull even. In short they argued, clintons delegate lead is nearly insurmountable. We are moving closer to securing the Democratic Party nomination and winning this election in november the clinton camp knows there is a fine line between confidence and arrogance. They say they will not be calling on sanders to drop out but it is his decision. Scott when she faced a similar choice in 2008, clinton stays in all the way to the end. Nancy cordes, thanks. Now with confidence and not a hint of arrogance well turn to john dickerson, our cbs news political director and anchor of face the nation. Trump lost a big one in ohio last night. How damaging was that . Well not winning the 66 delegates mean trump has to do better in the future. Before last night he had won 44 of the delegates now. He need to win 52 of the remaining delegates. Up for grabs. But, rules in later contests give winners a greater share of the delegates. That will help him and there was evidence last night, particularly in florida, where he got 48 of the vote, that his results improve as the field shrinks. So he has shown capacity to do better in the future. Now if republicans wanted to deny trump the nomination is there a way they could do that in the coming contests . They have to win enough delegates to deny him the majority of delegates. That means beating him outright in the states where they are winner take all. He may be weaker, montana, nebraska, south dakota. In the states where he is strong. That distribute delegates proportional. They have to come in close second to shrink the delegate prize. That is going to be hard to do. Kasich and cruz, keep splitting the nontrump vote. Maurko rubio dropped out last night. The face of the new Republican Party. Hispanic, young, what happened. He was selling the wrong product. That youth, that outreach expan tugs new voters and that optimism. It was a year when voters wanted a champion for their anger. And also, his greatest legislative achievement, pushing a comprehensive Immigration Reform bill, thats part of what had stirred up that voter anger in the first place. John dickerson, well be watching you sunday on face the nation. John, thanks. Today north korea sentenced a university of virginia student to 15 years of hard labor for what amounts to a college prank. Otto warmbill. Er arrested in january for stealing a propaganda banner while visiting with a tour group. The sentence came one day after president obama approved new sanctions against north korea for recent Missile Launch and nuclear test. The cbs overnight news will be right back. Hey ladies, heard the good news . Spray n wash is back. And even better. Its powerful formula removes everyday stains the first time. Which is bad news for stains, and good news for you. Spray n wash. Back n better. sound of music histling introducing new ky touch gel creme. For massage and intimacy. Every touch, gently intensified. A little touch is all it takes. Ky touch. Geico motorcycle, great rates for great rides. Can this much love be cleanedrlin by a little bit of dawn ultra . Oh yeah. One bottle has the grease cleaning power of two bottles of this bargain brand. A drop of dawn and grease is gone. Thousands of patients have been urged to get test ford hiv and hepatitis. After a hospital worker was charged with stealing pain medication. Here is ben tracy. 28yearold rocky allen was a surgical technologist at Swedish Medical Center outside of denver. He was arrested last month on federal charges of stealing and tampering with syringes of fentanyl, a painkiller more powerful than morphine. Court documents say allen removed syringes and replaced them with similar ones containing an undisclosed substance. Because hospital officials dont know what allen may have done with replacement syringes, 3,000 former patients are being tested for possible exposure to hiv and hepatit hepatitis. Attorneys say two people have tested positive for hepatitisb. Holland hoskins represents some patients. Patients who had surgery at Swedish Medical Center at the time period rocky allen was a surgical test. Tested by labcorps and positive for blood born pathogens. 1,500 patients are tested in the seattle area where allen worked. Allen banker is representing allens potential victims. Lying about his resume where he had been. Know he had been fired for the same thing at facilities. Allen has been fired at three homes in three different states. Including, scripps green in la jolla. A spokesperson for the hospital. He was witnessed by a colleague attempting to divert medication, switching out a a a a syringe of, of fentanyl for saline. According to his termination letter, allen admitted swapping syringes and planned to inject the drug. Rocky allen also served in afghanistan and was Court Martialed by the navy in 2011 for stealing the same drug. The records of that would have been available to an of these hospitals before they hired him. But, scott they either did not do a thorough enough background check or they ignored it. Ben tracy in the l. A. Newsroom. Ben, thank you. Well be right back. Thunderstorms in are in the forecast in flood soaked Southeast Texas along the louisiana border. Deweyville and orange seeing the worst floods in 130 years. Hundreds of homes have been swamped. Last month. Virginia mcloren danced with the obamas, yesterday celebrated her 107th with the Harlem Globetrotters at the school where she volunteers. Did tricks, magic circle, spun the ball wind auz given her own jersey. 107, of course. Norma bowerschmidt is having a ball too. We will have her story next. ,,,,,,,, we end with a lesson in living life to the fullest. Every minute, every mile. Here is david begnaud. Were you ever a beach girl before this . No. Reporter the story of 90yearold norma starts with an end of life decision. They wanted to operate and everything right away. I says, no. Well just leave it be. Reporter it was uterine cancer. Two days after that diagnosis, normas husband of 67 years, leo, died. I know went up here some place. Her son, tim and ramie, the family they had left. They live on the road in the rv. Tim was you either come along with us or we have to put you in a nursing home. Because i couldnt stay by myself. She just sat there quietly for a minute. I think i would like to come along. Ready to roll. So began the road trip with the fab 4. Tim, norma, raimie and ringo the dog. They left michigan and made it to rushmore. She saw the president s. And then, old faithful at yellowstone. Gazed into the grand canyon. Looked down on florida from a hot air balloon. Had her first pedicure in georgia and indulged in more beer and cake than she can remember. Did you think you would have this much fun at 90 . No. No. Want to pop a wheely for him, mom . Sure, why not. I have never seen her smile this much. Tomorrow i will be teaching my kids about you. Ramie posting about their trip on facebook. Now more than 200,000 people are getting to know norma. You are a sensation. Her own son is getting to know her too. This allowed me to have discussions i never thought i would have with my mom. To find out things you found out. She and my dad met. You didnt know your parents met at a bar until she told us . No. They have logged more than 7,000 miles so far. There is still a lot left on her to do list. That have given me a new lease on life i should say. You think you will live the rest of your life on the road. Yes, i probably will. Hi, norma. Hi, norma. If you see her along the way, wave. Because she will make you smile. David begnaud, cbs news, driving ms. Norma in saint augustine, florida. Thats the cbs overnight news for thursday. For some of you, the news continues. For others check back with us a little later for the morning news and cbs this morning. From the Broadcast Center in new york city, im scott pelley. Welcome to the overnight news. Im don dahler. After his big win in tuesdays primaries. Gop frontrunner donald trump apparently thinks talk is cheap. Next weeks planned Republican Debate has been canceled after trump announced he wouldnt attend. That got john kasich to bow out and left fox news with the prospect of ted cruz arguing with himself. So they called the whole thing off. The next voting comes tuesday with primaries in arizona and utah. And Democratic Caucus in idaho. For the gop, down to three candidates. Marco rubio called it quits after he lost his home state of florida. Major garrett reports. Donald trump needs to win half of the remaining delegates to clinch the nomination. If not, trump and republican foes establishment and otherwise will have to fight it out at a contested convention. We are going to go forward. We are going to win. More importantly we are going to win for the country. Donald trump celebrated big swing state victories tuesday night and paused to ponder the question that vexed his opponent. Why attacks against him dont appear to stick. My numbers went up. I dont understand it. Nobody understands it. My numbers went up. Trump won florida handily, typically that saments a republicans hold on the nomination. Not this year. I want to congratulate donald trump on his victory, big victory in florida. It did knock marco rubio out of the race. The politics of resentment against other people will not just leave us a fractured party. Thae they will leave us a fractured nation. Rubio won half the hispanic vote but lost to trump 20 points. Tonight it is clear while we are on the right side this year, we will not be on the winning side. John kasich long ignored on the campaign trail secured a crucial win at home in ohio. I labored in obscurity so long. People counting me out. Kasichs first win spoiled trumps bid for a perfect night. He vowed to campaign until the partys convention in cleveland. We have got one more trip around ohio this coming fall where we will beat Hillary Clinton and i will become the president of the united states. Ted cruz finished second in illinois and North Carolina with missouri too close to call. Enough he said to claim incremental progress. Tonight we continued to gain delegates and continue our march to 1237. Cruz zeroed in on jilted rubio supporters. To those who supported marco, who worked so hard, we welcome you with open arms. Trump comparatively mellow steered clear of the insults that have come to define his campaign. Sounding more and more like his partys leader. I spoke with Mitch Mcconnell today. We had a great conversation. The fact is we have to bring our party together. For the democrats, Hillary Clinton has all but secured her spot on the November Ballot with big primary wins tuesday. She beat Bernie Sanders by 13 points in ohio. And took florida by more than 30 points. Nancy cordes reports. This was apparently clintons most dominant night of the campaign so far. She shut sanders out nearly everywhere. And her campaign this morning, wont describe her lead as insurmountable. They do point out it is twice as large as president obamas ever was. In 2008. Thank you florida. Thank you, North Carolina. Thank you ohio. As clinton celebrated sanders didnt even mention his losses to a crowd. More than 7,000 in arizona. But, he made it clear, he plans to go on. Phoenix, are you ready for a Political Revolution . According to cbs news exit poll results, voters in all five states said clinton would make a better commanderinchief than sanders. And that her plans are more realistic. Every candidate owes it to you to be clear and direct about what our plans will cost and how we are going to make them work. Thats the difference between running for president and being president. [ cheers and applause ] reporter the sweep was a huge relief for clinton who openly worried earlier in the day that voters were getting complacent. People think they know who is going to win. They think i am going to be the nominee. They may not be turning out. We cant afford that. The surprise loss in michigan may have given them the volt they needed. The wins in ohio and illinois will blunt sanders argument clintons strength is largely confined to the south. 2 million more votes nationwide. She is now nearly 2 3 of the way to the democratic nomination. And had harsh word last night. There is great anger for the likely gop nominee who was just a few miles away at maralago. Our commanderinchief has to be able to defend our country, not embarrass it. Gop frontrunner donald trump is warning of riots around the Republican National convention this summer if he is denied the nomination. Trump now has more than half of the delegates he need to become the nominee. And he said he follows a couple votes short and the convention decides on some one else there could be trouble. Julianna goldman reports now on how a convention becomes contested. Contested convention for the republicans means delegates will vote and revote until a nominee gets the majority. The voting process is complicated, it can involve multiple ballots. From the start the rules are thrown out the window. Well are going to go all the way to cleveland and secure the republican nomination. John kasichs big win in ohio denied donald trump a full victory lap. We are going to go forward. We are going to win. The race for delegates continues. As republicans face the increasing odds of a contested convention. Its not necessarily a bad thing. Rnc chairman preidus says mate be too early to tell. Candidates believe they have a pathway to getting to majority of delegates before cleveland. We will be ready for anything. Reporter sources tell cbs news officials in the rnc, donors as well as the candidates, john kasich and ted cruz. Help is on the way. Are already planning for the possibility. Today the Democratic Party is the party of the american people. Traditionally Political Parties have a clear nominee heading into their conventions. Let me make one further pledge. I accept your nomination. I proudly accept your nomination. For the presidency of the united states. It is a minor civil case. Donald. Learn not to interrupt. The campaign defied the rules. At contested convention, delegates submit bal lots until some one wins a majority. There can be multiple round of voting. First round, delegates are bound by the results of their states primaries and caucuses. Once you get into additional rounds. Delegates no longer have those obligations and could throw their support behind some one who never officially entered the race. Campaigns will be working behind the scenes to shift delegate support. Some times that means candidates are jockeying, you know for the months leading into the convention. The last time the Republican Party held a convention without a clear nominee was 1976. Gerald ford beat out former governor Ronald Reagan on the first ballot to secure the nomination. Truly in historic territory. Political historian says an open convention brings with it the risk of creating a deeper divide within the Republican Party. Its hard for me to believe that Trump Supporters are just going to allow some kind of deal making to go on between everyone loves how they feel in dark clothes. And to keep those darks from fading. Theres woolite darks. Its free of harsh ingredients, keeping dark clothes looking like new for 30 washes so your love for dark clothes will never fade. 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The next term of the Supreme Court could face cases involving health care, immigration, climate rules, and gun rights. And it is the constitutional right to bear arms that has a lot of americans on both sides of the issue vowing to stand their ground. We have two reports on this. Starting with Anthony Mason and the Second Amendment. At the heart of the debate over guns in america, is a single inscrutable sentence. The Second Amendment of the bill of rights. The wording itself is unusual. Isnt it . Its