his friend also under arrest. and the jet, making an emergency landing. good evening, as we come on the airir tonight, the candidates are all over this state. 24 hours before the iowa caucuses. the race on both sides, too close to predict. hillary clinton with slight lead over sanders. but his crowds large and fired up here. we start with a new poll on the republican side, showing trump taking the lead back from ted cruz. marco rubio in third. trump fighting to close the deal after skipping the final debate before iowa. ted cruz, making news because of

here's jon karl. >> reporter: tonight in iowa, ump and his family trying to close their biggest deal of all. >> he will be unbelievable. the best deal maker, the best master negotiator. >> reporter: shaking hands, signing autographs, holding babies. an all-out push to turn poll numbers into real votes. >> i don't care if you havava 104 temperature, you can't leave. you will not be able to make it. get out of bed and caucus. >> reporter: the man that wants side. how do you close this deal? >> we'll see what happens. we've done well in iowa, the evangelicals, the tea party. i think we'll have a good result. iowa is a very special place. >> reporter: the whole trump

ivanka, with this how to caucus video. >> just write down trump. that's it. very exciting. >> reporter: and trump's sons, sounding very much like their dad. trump in church today, receiving a blessing from the pastor. ted cruz, also attending church. did you pray for victory? done. >> reporter: did you pray for trump and rubio? >> i actually did. i asked that god's blessing, peace, and love be upon them. >> a lot of people say cruz can't runner for the election. >> reporter: and rubio, casting

>> ted cruz is clearly the front runner. 10,000 volunteers, spent millions of dollars. >> reporter: rubio, hoping for a cruz crash. and leaving iowa voters with this promise. >> i will never embarrass you. >> and tom llamas with us live in iowa. you were there with melania trump, did she seem eager for what will come? and also, sarah palin also there? >> yes, melania is very excited, and thinks tomorrow will be great. the entire family will stain iowa. and palin will be with trump tomorrow. and staffers tell me they'rere confident but anxious. his quote tome, very few people have won the iowa caucuses. david? >> tom llamas tonight.

now to the democratic icic side, and hillary clinton bringing in bill clinton and chelsea, too. the newest poll has clinton at 45%, sanders at 42%. a statistical tie. warmer words toward sanders, and appearing confident. but the sanders team, raising more than $20 million in january alone. cecilia vega tonight on the battle between the two for the best ground game here in iowa. >> stick with me. stick with a plan. stick with the experience. >> reporter: 4 hour24 hours to go, and down. >> please join me and welcoming,

m. >> reporter: the entire family center stage this weekend. >>hank you bill. thank you, chelsea. people need to feel the deck is not stacked against them. >> reporter: tonight, hillary feeling the love. and packing in the crowds. this i just the line to get inside to see hillary clinton. look how far back it stretches. today, traveling more than 300 miles in iowa. sanders, clocking in nearly 200. but today, sanders is confident. >> love you, too. >> reporter: on the stump, a message of unity. this land is your land this land is my land >> reporter: but in the final hours, the vermont senator on the attack. >> dismantle health care? i've spent my life fighting for

man, woman and child. >> reporter: and clinton, still reeling from the revelation that 22 e-mails from her private server have been deemed top secret. saying it's a dirty trick. >> i have to point out the timing and some of the leaks are concerning. i just want the matter resolved. >> hillary clinton knows what this is like. eight years ago here, on the % night before her iowa loss. they're taking no chances, actually rehearsing turnout? >> yes, and n only that. volunteers are sending hand-written notes. and sanders volunteers knocking on thousands of doors as well. >> a lot of work on both sides. thank you.

first-time voters out to caucus? and how do you get undecided voters? here's jon carl. >> reporter: one of the many hillary clinton office in iowa. it's boots on the ground time in iowa. these hillary volunteers are armed with detailed information on every door they knock. >> sometimes they've switched to trump. how is that possible? >> reporter: we're at rubio supporters, calling them to make caucus. >> sergeant bluff community nter. >> reporter: this volunteer is a student at iowa state. you're calling over and over and over again. are they okay with that?

is the third timi you've called. >> donald trump? new york values. clinton and bush. two names from the past. >> reporter: and then there's the junk mail. some reffed this, election alert. underneath, the person's voting score, wther they've voted in recent elections. caucus on monday to improve your score, it says. warning of a follow-up notice after the event. from the cruz campaign. over at this diner, these folks are still truly undecided. when are you going to make that decision? >> maybe 7:00 p.m. tomorrow. i don't t ow. >> we'll swing by that diner tomorrow. jon, as you know, the biggest prize tomorrow night could be

never voted before. and we heard trump explain how to do it. >> that's right. both are counting on a big turnout on the never caucused before voters. if they turn out, they probably will win. "good morning america" will be live from iowa tomorrow. and i'll be here tomorrowight from iowa. and the next big debate, after iowa and just days before new hampshire. join martha raddatz and me, next saturday night, right here on abc. and the other facto playing to the iowa caucus, the weather weather weather. trees do in southern

highway shut down because of flooding. six inches in reno and counting. and it will hit here right after the caucuses are wrapped up. let's hope. in the meantime, we turn to a disturbing case making national headlines this sunday. breaking developments in a murder investigation, a virginia tech student arrested, and his friend, too. here's eva pilgrim. >> reporter: tonight, two virginia tech students uer arrest. >> late saturday night, the investiuation led us to david e. eisenhower, a virginia tech student. >> reporter: saying he knew the

a second student, charged as an accessory, helping him to get d of the body. searched. she had a liver transplant and needed daily medication. >> i didn't think that would happen to her. >> reporter: saturday, her body was found. tonight, both suspects being held without bail. >> thank you. to california tonight, and the dramatic takedown the fugitives considered armed and dangerous. authorities saying they got help

but it would appear their help p has run out. here's matt gutman. >> reporter: they were hauled back in through the front door. >> we're actively investigating helped. >> reporter: it was a citizen that helped with the capture of nayeri. nine days ago, they hacked a doggie door in this great. and then rappelled off the roof. and a teacher supplied them with google images helping. and also sent mushy love notes to nayeri.

different section of the maximum security jail, but separately this ti. david? >> matt, our thanks to you. around the world, new concerns over the spread of the zika virus. the world health organization holding a meeting tomorrow. ct's spread by mosquitos. the number of infected people growing. here in the united states, 3 3 cases in 12 states. now to an emergency landing for a jet. a passenger shot this video of the jet dumping fuel. the 747 did make a safe landing. there's still much me ahead on "world news tonight." the "real money" team is back. with this question, with

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>> reporter: it's t t greatest show on earth. hello sioux city >> reporter: taking potshots at dus. >> ted cruz is my man. >> reporter: there's even a musical. they're always on my channel >> reporter: starting with meat on a stick at the state fair, and coming down to the pizza ranch strategy. and every four years, a bumper crop of candidates. tomorrow is harvest day. david wright, abc news, des moines. >> thank you for watching