when people are counting on you have to deliver. >> reporter: you're not used t to this underdog-type position. >> they always say, he can't wi he can't be a senator. he can't be a congressman. each time he's proven them wrong. >> i'll take you out to dinner. >> okay. >> last night was his 100th stop here in the state of iowa. and as you can see, his wife brings out another side of t the candidate. >> she taps into his core

strength, persistence. i remember, i was working in congress 25 years ago when he first got to congress. onone of theost striking thing ababout bernie sanders, his message has been consistent all >> when he ran for mayor, he won by ten votes. he has that tenacity, you're right, he stays on messagege and he believes in what he believes in and he's been consistent throughout. >> we'll see what happens tonight, no question. >>> david muir and "world news" will be here tonight.

the heaviest snow won't hit iowa until after midnight. in southn california heavy rains flooded highways. >>> well, the justice department will now investigate san francisco's police department after the shooting death of a man which has inflamed racial tensions there. police responding to a report of a stabbingng back inecember, saying woods refused to drop the knife he was holding. he was killed in a barrage of

rural district number three... the weavers are expecting about 80 people come sabrina: meterologist sam schreier is keeping a close watch on the current conditions... hey sam... sam/ weather adlib:

ask your dermatologist about humira.

unfold. >> have a great day monday. great day monday.good morning i'm elias: today iowans get choosing who should get the republican nominations for president. elias: first decisions happen in some pretty unexpected places. mary and gary weaver are hosting their fourth caucus in out of their out of 1600 caucus across the

i've nev run in my entire political life a negative ad. not too many people can say that. >> i heard that you went to the white house and there are only two people who were not wearing a tux you and nelson mandela, was that true? >> yes. >> if there's an inaugural ball will you then finally? >> i don't think so. mimill wife sagrees. you know, a tux is kind of symbol of class privilege. that says i'm really important and i'm fancy and you're something else. >> senator sanders joins me now. >> you told my colleague

front-runner. >> reporter: all that's left is getting their supporters to the caucuses. >> i don't care if you're feelinhorrly, a 104 >> reporter: so, now, the big question is, how many of these people actually get out to caucus? so, let's do a quick surve here -- how many of you are going tonight at 7:00? [ cheers and applause ] >> and george, as you know, that's the name of the game right now. bernie sanders said that he wants his people to beg, borrow, or if necessary, kidnap, to get people to go to the caucus

sam/ weather adlib: >>> good morning, america. it's 8:00 a.m. and the final push. we are l live in ia. just before the first votes are cast in the race for president. >> we're going to have victory. this is a movement that's happening. >> they throw all this stuff at me and i'm still standing. >> all the major candidates talk to us this morning. >> candidates on both sides

some of that rainfall is going to head up towarard the sn zone. they're worried about melting snow across the virginias and in through washington, d.c. >> the big melt is on, ladies and gentlemen. spring temperatures continue across the northeast. that's a quick check on your we have this exciting guest this morning. a pretty good weather expert. you're me of an expert on rainbows. kermit the frog, he's the executive producer of up late with miss piggy. revamped the mupupts. phenomenal show. what can we look forward with the new time slot? >> the same old stuff. by the way, it's exactly -- it's

unfold.

will you then finally? >> i don't think so. mimill wife sagrees. you know, a tux is kind of symbol of class privilege. that says i'm really important and i'm fancy and you're something else. >> senator sanders joins me now. >> you told my colleague recently, martha raddatz, tongue in cheek, you got a big ego like stay grounded? >> it's a humbling and scary experience because people are

only five private homes that hold a caucus. they say they do it because they feel it's their civic duty to help their neighbors have a close and accessible place to make thier opinions known. they add that although there are a lot of different opinions shared in their living room while people caucus... people seem to get along. "mary weaver - caucus host you know each other, may be neighbors may see each other in the grocery store, so its very civil. we're all iowa nice. " elias: right now there are about 120 voters registered in rural district number three... the weavers are expecting about

so, and i love you and we're best friends now. let's nomess it up. he had to ask me a couple of times. he said, no, will you marry me? i said, fine. >> reporter: saw the big hug that you gave a veteran on the way out and i know mrs. sanders you said a veteran stopped you all, when you were on the fence on whether or not your husband you. >> yes. people were counting on him. when people are counting on you have to deliver.

about the spread of the zika virus as the w.h.o. holds an emergency meeting. the mosquito-based virus has been linked to birth defes. dr. richard besser with that >> reporter: right now geneva, a very special meeting is taking place at the world health organization, and they're going to determine whether to call the zika epidemic spreading around the globe a public healthth emergency of concern. it's important. in 2014, they were slow to respond to the ebola virus.