remember news updates always on cbssf.com. in 30 minutes. >> glor: all political eyes turn to indiana. a new poll shows a potential blowout in one race, and a possible upset in the other. also tonight, crisis in iraq. the system falls into further chaos after a weekend of violence. al's college decision day, malia obama makes her choice and how the new payback play book will ybfect millions of student loans. plus, america's most famous anrcus elephants take their final bow. captioning sponsored by cbs this is the "cbs evening news." >> glor: good evening. i'm jeff glor. this is the western edition of the broadcast. campaign 2016 runs through indiana on tuesday. a new poll out today shows republican frontrunner donald trump 15 points ahead of ted cruz there. john kasich stopped campaigning

in indiana to give cruz a better chance of taking delegates from trump. on the democratic side the poll shows hillary clinton four points ahead of bernie sanders but with a margin of error it's a virtual tie. julianna goldman begins our coverage from d.c.. >> by the way, if we win indiana b's over, okay? wd then we can focus on crooked hillary, please let's focus on hillary. >> reporter: campaigning today in indiana donald trump was already looking past tuesday's primary. >> just like bernie sanders said about crooked hillary clinton, she suffers from bad judgment. and you can't have her be your president. >> reporter: a double digit win would put trump on track to secure the majority of delegates needed to win the nomination before the summer's convention which would spell doom for ted cruz. >> we're going to go to a contested convention. >> reporter: the texas senator can only win with a floor fight in july. and today he hit all five sunday shows insisting he's got a viable path.

>> donald knows he cannot earn a majority of the delegates that were elected by the people. and you got to win a majority. if you can't win a majority, it means you can't unite the party and you can't win. >> i feel that donald trump is probably leading. and if he does get the nomination. >> reporter: but even cruz's supporters are joining establishment republicans in accepting trump as the likely nominee leaving the anyone but trump movement morphing into anyone but hillary. >> i will work against the divisiveness, the mean- spiritedness, the hateful rhetoric that we are hearing from donald trump and others. >> reporter: clinton is also gearing up for a trump matchup, while the delegate math works against bernie sanders, today in washington he called on ppperdelegates to flip their support. hed he vowed to stay in through the convention. >> that is admittedly, and i do not deny it for a second, a tough road to climb. but it is not an impossible road to climb.

>> reporter: sanders is predicting a contested convention, but one area where he is losing steam is on the money front. jeff, he brought in 26 million dollars in april, far less than the 46 million dollars he raised in march, raising more questions about his viability through the summer. >> glor: julianna goldman, thanks very much. at least six people were killed by a flash flood this weekend in east texas. another round of intense storms threat lf coast heading y. here's manuel bojorquez. >> reporter: large hail pelted parts of louisiana today where cvere storms also caused flash flooding. in new orleans the dangerous weather forced the cancellation of the city's acclaimed jazz fest. and across the louisiana border in arkansas' layfayette county. >> how are we going to get out. >> reporter: high water stranded residents like robbie henry. >> and i was getting ready for lrk, something said look outside. i looked outside, the first thing i said, "oh my car. we're underwater."

>> reporter: after flood waters receded in the east texas town of palestein, officials recovered the body of a sixth esowning victim. a 30-year-old man who died in the same area as a woman and her four grandchildren friday night. when nearly eight inches of rain fell in one hour. 60 miles north in lynndale texas the cleanup from a tornado that destroyed businesses and homes continues. >> there's just trees all the siy down this side of the property. >> reporter: from where we are standing here you can't even see the house, it's all trees. >> it's all trees. >> reporter: katie smith says her family friends, these three teenage girls, survived by seeking shelter in a closet. but there was so much debris that reaching them at first was difficult. >> i was completely scared. you know, i had no idea what i was walking into. my children were upset. they were crying. you know, we were walking down the road and there are just srees and power lines everywhere. >> reporter: today the national weather service confirmed the

tornado that destroyed these homes here in lynndale was a category ef-2 with winds up to 115 miles per hour. jeff, the system continues to track east into alabama and parts of the deep south. >> glor: manuel, thank you. this weekend american and french jets destroyed an isis car bomb factory in iraq. in other parts of the country isis was on the attack today, on the heels of a huge protest in baghdad yesterday. jonathan vigliotti is in london. >> reporter: protesters clashed with police inside baghdad's heavily fortified green zone as demonstrators demanded an overhaul of what they call a broken government that has failed to provide basic services like water and electricity. "this green zone is not the property of any member of the parliament. it's the property of the iraqi people," said habib al-battat. and he and hundreds of others made themselves at home in this international government qimpound, rarely seen by iraqi civilians. yesterday thousands toppled the

green zone's blast wall and stormed parliament. cell phone video shows lawmakers escaping in cars. the crowd, backed by popular shiite cleric muqtada al-sadr demanded prime minister haider al abadi overhaul his cabinet which they say is part of a corrupt political system put in place by the u.s. after the invasion in 2003. this weekend's security breach came less than 48 hours after vice president joe biden visited the iraqi capitol in a show of support for al abadi who the u.s. regards as a stable partner in the war on isis. but there is concern isis is feeding off this political instability. this afternoon the group carried out twin car bombings that rocked the southern iraqi city of samawah. more than 30 people were killed. it is the latest in a recent wave of attacks. jonathan vigliotti, cbs news, london. >> glor: the cleanup continues following a train derailment and chemical spill in washington, d.c. this morning.

a freight train went off the tracks flipping 14 cars on their side. the train was carrying sodium hydroxide used in household cleaning products but no evacuations were ordered and the spill has been contained. at last night's white house correspondent dinner president obama made his final appearance while in office. and jamie yuccas has details. >> the end of the republic has never looked better. >> reporter: this year marks president barack obama's last correspondent's bash which may have been his finest performance. >> i know i was a little late tonight. i was running on c.p.t. which stands for jokes that white people should not make. >> reporter: mr. obama known for his well placed zingers made the job of comedian larry wilmore even harder. >> i have to admit it's not easy to follow the president, man. you got some jokes, mr. president. >> reporter: mr. obama roasted the presidential candidates,

comparing hillary clinton to an aunt who doesn't understand facebook. >> dear america, did you get my poke? >> reporter: he called 74-year- old bernie sanders the bright atw face of the democratic party. >> bernie, you look like a million bucks, or to put it in terms you will understand, you look like 37,000 donations of $27 each. >> reporter: 20 minutes in, he pretended to be wrapping up. >> i'm just kidding. you know i'm going to talk about trump. >> reporter: who was not in the room. >> i'm a little hurt he is not here tonight. >> reporter: once he got started the punch lines kept coming. >> there is one area where donald's experience could be invaluable and that's closing guantanamo. because trump knows a thing or two about running waterfront properties into the ground. >> reporter: the president's last laugh came as just two mards. >> obama out. >> reporter: the end of an era. jamie yuccas, cbs news, new

york. >> glor: the first family's first daughter has decided where she's going to college. harvard will be malia obama's new home. not quite yet, though. she is taking a so-called gap year. a year off before she starts at harvard in 2017. the first family made the announcement on national college llcision day, the deadline for enrollment deposits. for those taking out college loans the government just rolled out a new payment plan. and cbs new business analyst jill schlesinger is here with more. jill, this is called the payback play book. >> we know that student loan debt has ballooned. it has gone up by two times over e e last ten years, 1.3 trillion in outstanding debt. i think the bigger problem is that about one in four students is actually in default or delinquent on the loan. and the government was really wondering why weren't more people taking advantage of various repayment options that have existed since 2009. the consumer financial

inotection bureau did a study. they found there were big problems with the loan servicers not giving enough information to rsudent borrowers. >> glor: so this just presents more options for payback. >> absolutely. what it does is lays out three npecific ways that students can pay back their loans. and they do it in plain english, no fine print. so let me give you an example of isis. tt's say your current plan is a loan for ten years and you've got $271 a month payment. then you say well, what would happen if i had an accelerated payment that started low and went up to a larger number at the end. you could start at 152 a month. and then there is a plan that is just based on your income, and that would be the lowest payment it would occur over 20 years. so you have three plans. you figure out which one is the best one for you. >> glor: but none of this is set in stone yet, so what is the next step? >> so right now we're going to see some public comment on this. but the government is really wanting to see this plan implemented as soon as possible. and frankly, they're very concerned that like with the mortgage crisis, that if

borrowers don't have enough reformation, they're going to be behind the eight ball. again the student loan debt problem is a huge issue. and this is one way to help address it. >> glor: jill, thanks very much. >> thank you. >> glor: up next here, circus elephants pack their trunks for retirement. and new images of a picture- perfect princess when the "cbs evening news" continues. on the denture,at stils and that bacteria multiplies very rapidly. that's why dentists recommend cleaning with polident everyday. polident's unique micro clean formula works in just 3 minutes, killing 99.99% of odor causing bacteria. for a cleaner, fresher, brighter denture every day. when age-related macular have degeneration, amd we came up with a plan to help reduce my risk of progression. and everywhere i look... i'm reminded to stick to my plan.

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with humira, control is possible. unless you have allergies. flonase is the first and only nasal spray approved to relieve both itchy, watery eyes and congestion. no other nasal allergy spray can say that. go ahead, embrace those beautiful moments. flonase changes everything. >> glor: today marks the final performance for elephants at ringling brothers barnum and reiley circus after years of pressure from animal rights groups. demarco morgan reports on this. >> ladies and gentlemen! >> reporter: the greatest show on earth is letting go of its biggest performers, 11 asian elephants performing their last head stands and taking their final bows. >> here we go. >> reporter: ending a 200-year spectacle that has enthralled fans and enraged animal activists for years. kenneth feld is chairman of the parent company that owns the

circus. >> it is a bittersweet decision, there is no question about that, but it is the best thing and we felt this was the right time to w it. >> reporter: the right time to retire these enormous animals with their star-studded tiaras that have been the subject of thousands of youtube videos from activists citing animal abuse. >> it is hard for me to believe that anyone would have to be dragged kicking and screaming into show business but for the elephants with ringling brothers that is exactly what happens. >> reporter: it is part of a huge shift of attitudes for animals in entertainment with sea world phasing out its killer whale shows at its amusement parks last month. these elephants will retire to this 200-acre conservation center in florida run by the owner of ringling brothers. more than a dozen circuses still tour with elephants but none as widely or with as much fanfare... >> ♪ oh say can you see

>> reporter: ...as ringling s others. er it's the end of an era that should have ended a long, long time ago. >> reporter: elinor molgebott is with the humane society of new ngrk. >> this is so unnatural for them. they shouldn't be subject to abuse. more people that know that will enjoy the circus more knowing they are going to something that is humane and isn't causing suffering. >> reporter: the controversy won't end here. ringling brothers says they will continue to use other animals including lions, tigers and horses for animal acts. >> glor: 33 rescued lions are finally paws down at their new home in south africa. mee animals had been abused at usrcuses in peru and colombia before a rescue organization set up an airlift and flew them to a big cat sanctuary north of johannesburg. up next here, tell alana nichols she can't do something and she will. will i take prilosec otc each morning for my frequent heartburn

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on this day, she had her longest ride ever. >> by the time i'm done with the so hour surf session, i'm completely exhausted. >> glor: alana nichols is constantly in motion. >> if i don't push up that hill, i don't get my heart rate going. i don't sweat, i don't breathe hard. that's really important to me. >> glor: she spends hours in the gym strengthening her upper body. often pulling hundreds of pounds of weights. she only started training a year and a half ago in sprint kayaking which will be a new sport at the rio games in september. >> it's very much a full body sport. what happens for an able-bodied kayaker is they basically do what is called a reach. you reach as far out as you possibly can. you catch the water with your kayak and then an able-bodied shhlete is going to be able to stsh off their leg as they pull e,e water past them. and so for me, i've got my legs locked completely straight in here so i can actually catch the

water and transfer my energy into the boat with my core strength. >> glor: her coaches told us alana nichols has an uncanny ability to learn quickly. she's able to reach an expert level when others are still figuring out the basics. >> tell me i can't do something and i will. >> glor: nichols has overcome enormous personal challenges along the way. you can see the full report on "60 minutes sports" tuesday night on showtime. princess charlotte is celebrating her first birthday tomorrow. and to mark the occasion, kensington palace released new photos taken by her mother. ome of the candids of the princess at play, and others looking a bit more serious. still ahead here, the nun who has never given up. poor mouth breather.

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community are running for their lives. adult onset diabetes once known as a disease of the elderly is affecting children here as young as four. >> knowing the propensity our people have for diabetes we start the day out with running. >> reporter: sister martha mary oorpenter is the school's principal. >> we don't teach subject, we teach children. and we're giving them the skills, lifelong healthy habits. >> reporter: some of the 230 boys and girls enrolled in this k through 8 school are already clinically obese. a few tipping the scale at nearly 300 pounds. for thousands of years, the pima indians lived off the land farming this desert. but after the gila river was dammed in 1930 to provide water to nearby phoenix, their farms dried up. "60 minutes" visited this community in 2003. its rare to see a physically fit

person here. and according to the national institutes of health, they are still among the most obese americans. back then, sister martha had taken on the federal government and won. she was granted permission to modify the federal school lunch guidelines for her students. today's lunches are healthier. >> low on carbohydrates, higher fr protein, fresh fruit and fresh vegetables. >> reporter: the results are visible and invisible. >> this year we may have several children who are pre-diabetic but we don't have any children who have that dreaded disease. >> reporter: after 33 years of fighting for these kids, this battle has become personal. >> when i see their smiley faces and their running feet, just makes my day. >> reporter: with her help, these kids now have a running start on the rest of their lives.

don dahler, cbs news, new york. >> glor: that is the "cbs evening news" for tonight. later on cbs "60 minutes." rsd first thing tomorrow, "cbs this morning." i'm jeff glor in new york. good night. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org

chaos... as "may day" marchers.. take to the stre plus: the solar- powered plane that's been sitting at moffett field all week.. finally set to take . in pitch dark. nat highlight and -- steph who? another stellar performancey the warriors --without their star.. as the blazers fold like a cheap suit. good evening, i'm brian hac. i'm juliette goodrich. plenty of action in the baya on this may day... honoring workers rights. in san jose: hundreds marched neary hall demanding better wages. in oakland: protestors call for a range of changes. kpix five's mark joins us le from oakland's san antonio park.. where one of those rallies ended a little moren an hour ago. mark? and today's protestors weret just marching for better pa work. this seemed to a be a

rally for all types of caus. nat (marching) perhaps the one thing hotter than toda' sunshine was the frustration these marchers are feeling. ("what do we want. justice.n do we want it. now") historically...may day...al called international worke' day..... was to fight for br conditions at work. today's marchers went further...including the fig against deportation too. bi omar ali, arab resources and organizing center--"deporta does separate a lot of fami, and causes a lot of harm to lot of communities." bite ka esteva, causa justa--"if a family is making less than minimum wage, and they're ao having their family deporte that creates a crisis for t communities. from a higher minimum wage to black lives matter to students' rights.....marchers say the seemingly different concerne in fact all connected. bite brooks, co-founder, anti-po terror project--"unity and community." mk--"and that'st today is all about." cb---"that's what today is l about. and the power of the people." ((we have this vid with us)) today oakland police watched this year's h from a distance rememberingl well that last may day turn rowdy when the sun went down....vandals even looting businesses along auto row. so far...may day 2016 has sd peaceful. bite cat brooks, co-founder, anti-police terr project--" the action has n been anything but peaceful. 2016 has stayed peaceful. be cat brooks, co-founder, anti-police terror project- the action has never been anything but peaceful. the excessive amount of policin that could do more to take things in an opposite direc than just the people in the streets together. that anger at the police wi come up again tomorrow. many of these same marchers wille protesting outside the alama county sheriff's office tomw against police brutality. thanks, mark. so far: today's protests are a far cry from what we w last year.