this is "nightline." >> tonight -- >> how great are they? >> diamond and silk. those are the names of two youtube personalities stumping for donald trump. with so many people furious about the gop front-runner's comments about women, why are these women urging orthos to help make america great again? the haller back girls troupe. gwen stefani reflecting on her deeply personal new album. >> wow, i can't go down -- >> how she channelled a rocky year into pop gold. >> i'm not going to fail. try doing this in the elevator -- >> is the key to confidence in your posture? first here the "nightline 5." ♪

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good evening. donald trump has called women names, he's criticized a female opponent's face, and he said that women who were to get illegal abortions should be punished. he took that last comment back. but it has not mitigated the tsunami of outrage against him. so why then are two female youtube personalities gng

for trump? my "nightline" coanchor byron pitts with a fascinating account tonight. >> she will make an unbelievable first lady. >> reporter: tonight melania trump making a rare appearance on the campaign trail of wisconsin for her husband. >> no matter who you are, a man or a woman, he treats everyone equal. >> reporter: perhaps in an attempt to rally women around the candidate who by most measures is having trouble with the ladies these days. >> nobody has greater respect for women than donald trump. nobody. nobody. >> reporter: but women may see it differently. a new poll shows that 73% of female registered voters have an unfavorable view of donald trump. >> mr. trump -- >> reporter: comments like these didn't help. >> you've called women you don't like fat pigs, dogs, slobs -- >> she was favored to win and she got [ bleep ]. she lost. >> do you believe in punishment for abortion, yes or no, as

principle? >> the answer is that there has to be some form of punishment. >> reporter: that hasn't kept these women away. >> hey, y'all. >> hey. >> welcome to "tabletop." >> you know what we like about donald trump? >> yes. >> please tell me. >> he's going to do exactly what he says he's going to do. i'm ready to feel like a woman again. so let the man protect us. >> how great are they? >> reporter: they call themselves diamond and silk, sisters from north carolina who say they're proudly and loudly stumping for trump. >> this is not about politics. this is about common sense. >> reporter: they've become regulars on cable tv. >> donald trump is going to do well with the african-american vote. >> that's right. >> he's going to do well with the latino vote -- >> reporter: take a look at their youtube page with 6 million views and counting. >> donald's right and you need to vote for donald j. trump! >> diamond, real name lynnette, sounds like a baptist preacher. silk,

like her accompanying choir. >> we want someone who's going to work for the american people and not against the people. i'm going to calm myself now because i'll start preaching. >> start? i was waiting for the benediction. we were deep into the sermon i thought. >> reporter: spending the day with them i found out for myself diamond and silk have mastered the art of politics. dodging questions left and right. >> that's none of your business. >> none of your business. >> that's none of your business. >> yes. >> reporter: but they're happy to talk about trump. and their idea to support him last summer. >> a silk girl cut on the tv, donald trump is announcing that he's running for president. >> and i stopped what i was doing and i cut on my tv. >> then she called me back, girl, this is going to be our next president. and it's been on ever since. >> so today we are going to the board of elections so we can change our party to republican. >> reporter: the life-long democrats say they switched their registration to the republican party last september so they could vote for um

>> board of elections! uh-huh, uh-huh! >> reporter: of course they film the moment for their video blog. the duo created an online campaign telling other voters how they could do the same. >> we decided to start a movement called the ditch and switch. what we wanted, independents and democrats to switch their parties to vote for donald trump. in the primaries and the general election. because he got -- >> reporter: they began making videos, eventually caught the trump campaign's attention. >> do a little routine, go ahead. >> first of all -- >> reporter: an invitation to attend his events in wisconsin, iowa, south carolina followed. including a chance to meet the man himself. >> what did he say to you? >> it's none of your business. but he do appreciate -- >> sounds like your stump answer. i've never done an interview where i've been told none of your business -- >> what do you want me to say? how else could i have said that i byron, to make your comfortable? >>

125 videos in the past eight months. >> so when these reporters -- >> reporter: we were there for this one featuring their analysis of the ted cruz versus donald tmp wife battle. >> i see this is exactly why we don't need ted cruz running nothing up in that white house. >> that's right. >> he don't need to take our tax money and be buying prostitutes -- >> reporter: i thought, ghetto fabulous, in your face, over the top reality tv generation performance. >> according to the "inquirer" it was five women. >> reporter: some conservatives love them. many black social media sites not so much. some calling them disgusting, ignorant, playing to unflattering stereotypes. >> why is it black people can get on tv and act a fool and it's funny. as soon as we get on oar small youtube got everybody got something to say. as soon as this billionaire invites us onstage now all the black people got something to say. >> reporter: when asked what work they used to do before professionally stumping for trump -- >> he got something to say about donald j. trump. >> reporter: they

>> do we have to get all personal? >> what does that mean? >> do we have to get -- i thought this was about donald trump. >> it's about donald trump and the people who support him. we're wanting a better understanding of who they are. >> okay. >> reporter: but after a little more prodding they said they were business owners. >> we were entrepreneurs. >> okay. can you be a little more specific? >> no, i can't. >> how about you? >> likewise. >> none of my business? >> it's really none of your business. >> with all due respect. >> you're getting lots of attention because of your stance. has it benefited you financially at all? >> we're not looking for anything to benefit us financially. however, we are entrepreneurs. >> call that number, praise god, amen, and be blessed -- >> reporter: the entrepreneurial spirit seems to run in the family. their parents were televangel t televangelists who sold herbal pills on tv. >> everybody that has life has to be on the colon cleanses -- >> reporter: diamond and silk sell merchandise on their website and feature it prominently on their webcasts like these bling mugs for $2

and hoodies for $55. >> how's business since you've been involved with donald trump? >> well -- i guess it's okay. >> i tell you one thing, we employ some folks. >> that's right. because our stuff is made right here in america. >> reporter: products made in america, something trump himself has boasted about with his own campaign merchandise. "nightline" look the at trump's campaign filings and found the campaign has paid more than $2 million to a-specialties, a promotional product companies that supplies merchandise made in the u.s. and sold by the trump campaign. we called ace specialties and a salesperson said the company also supplies merchandise for diamond and silk. >> and this is going to be our next president of these united states! >> reporter: when "nightline" followed up for more information about their work with trump and diamond and silk the official spokesperson for ace did not respond to "nightline's" request for comment. we asked the trump campaign fit has a financial connection to diamond and silk. a spokesperson said they have never been paid by

which you can verify in our fec reports. there is no connection with ace. we very much appreciate the unwavering support and enthusiasm from diamond and silk." trump himself introduced diamond ask sill this can way. >> i see two of my friends in the audience. and they've become very famous and very rich. >> he introduced you two saying, very famous and very rich. what did he mean? >> you know what, let me just say it like this here. i'm happy -- >> are you struggling for words? >> i'm not struggling for words, no. >> surprising. >> i'm just like, everyone always want to know, are we rich? we rich? we're rich in spirit. >> exactly. >> we're rich in spirit. >> that's right. >> reporter: after our interview we asked diamond and silk about their youtube income and merchandise sales. a spokesperson said she was unable to answer due to the personal and propie tear nature of the questions. in this presidential campaign season --

>> reporter: it's often felt more like reality tv at its lowest than democracy at its finest. >> people are going from democrat to republican -- >> reporter: diamond and silk sister act seems right at home. in your face. loud, proud, and unapologetic. >> talk to you i thought, these two might be crazy. as i leave i think, these two might be crazy like a fox. >> you know what, you can call me what you want to. because i am who i am. >> we know who we are. we're not crazy. >> and i'm happy. >> reporter: for "nightline" i'm byron pitts in raleigh, north carolina. >> you all make this a great day. bye-bye! next, channeling personal pain into pop success. gwen stefani on how her very public divorce fueled her new record. and who she's singing to in "make me like you."

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so what do you do if you're gwen stefani and you have to watch your messy divorce play out in the tabloids? you make a record about it. as abc's lara spencer found out, it was not easy. ♪ >> reporter: it has been a monster year for gwen stefani. ♪ >> reporter: rocking music

me like you." ♪ i'm so mad at you now you got me missing you ♪ >> reporter: a musical love letter to her new beau country star blake shelton. >> tell me about "make me life you." >> that song was one of my favorite songs to write. we just came out. it was like i had been feeling that way, like it's just exactly what i felt that day. here it is. know what i mean? everybody in the room was kind of like, whoa. this is happening right now. it was written fast. like 10, 15 minutes, the whole thing just done. >> what's up? rock 'n' roll goddess diva. >> whoa. >> reporter: they are the new hollywood "it" couple, connecting on the set of "the voice." >> i love blake so much. i'm just trying to get attention from him. >> i'm not falling for the puppy dog eyes. >> reporter: shelton, newly separated from country singer miranda lambert, was a shoulder to lean on, stefani says, and eventually something more. ♪ you're getting over

>> reporter: he too released a song inspired by their romance "came here to forget." ♪ first kiss was like a hit keep on keeping it live ♪ >> reporter: stefani had her own past to forget. summer of 2015, she split from her husband of nearly 13 years. the father of her three sons. front man of the rock band bush, gavin rossdale. she filed for divorce citing irreconcilable differences. tabloids speculating rossdale had an affair with the couple's nanny. >> how painful was it? >> it's still painful. like it's -- i'm still like looking at the pieces going, what is happening? there's so many great things. but it's still super hard to like have your family break up and have to like figure out the next -- what do you do after that? like here we are, we're doing it. ♪ we used to be together >> reporter: like in

hit "don't speak" inspired by her breakup with the band's bassist -- ♪ don't speak >> reporter: her work turned into a way to get her through the split, channeling heartbreak into learibles. >> i tried to write because i know that was my gift. and i was like, i'm going to do this, make this into music. >> yet the record label as you're showing them the music wasn't into it. >> after i'd written a bunch of songs, 15 songs, they were kind of like, i don't know, it's a little harsh. it's a little bit too honest. i don't think people can relate to that. because the first songs that i wrote were really like angry. ♪ hollaback girl >> reporter: those experiences just motivated the hollaback girl to become the comeback girl. >> my god, i was embarrassed. i felt like, wow. i can't go down, this is not who i am, i'm not going to fail. ♪ >> reporter: she went back

the studio, this time with the emotional track "used to love you." ♪ i used to love you >> it was written like 20 minutes, like done. ♪ nobody taught you how to love ♪ >> the first time in my entire career that a record company called me and said, we think you've got a big song. >> reporter: it is one of many intensely personal songs on her new album "this is what the truth feels like." >> "make me like you," "misery," "truth." all the ones -- >> listen to the titles of all these songs. red flag. misery, truth, i used to love you. >> don't. you're going to hurt. it's a lot, this is a lot right here, okay? so everyone knows. it's hard to sit here and be like talking about all this as it's happening in realtime. >> do you think the music saved you? >> for sure. like 100%. 100%. >> three-time grammy winner, 30 million albums sold

was there really a time that you believed your career was over? >> i always felt like we're never getting on the radio, i always felt like amazed by that achievement. so there was never a point where i was like, this is going to keep going. that's the reason i started lamb and backup projects. i thought, how i would possibly be -- it's going to end, it's going to end, it's going to end. it keeps going so i feel like everything is really icing on the cake at this point. but i feel so grateful. this is just -- it's crazy. >> grateful and yet -- you've gone through a lot. >> i have gone through a lot. but i feel like you have to be grateful for that. if i didn't do that, i wouldn't have this. you have to be grateful for all of it. >> reporter: for "nightline" i'm lara spencer in new york. up next, the woman who taught the world that striking a power pose can give you confidence in stressful situations, now facing a stressful situation of her own.

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darling under fire. >> i'm going to tell you a story about being an impolicy tear and feeling like i'm not supposed to be here. >> reporter: amy culty gave one of the most-watched ted talks ever. she spoke about overcoming so-called imposter syndrome in her academic career, then about how she helped one of her students. >> she came in totally defeated and she said, i'm not supposed to be here. and that was the moment for me. because two things happened. one was that i realized, oh my gosh, i don't feel like that anymore. you know? i don't feel that anymore but she does and i get that feeling. and the second was, she is supposed to be here. >> reporter: in her talk she presented her scientific research which she said shows that people who strike a two-minute power pose before a stressful situation feel more confident and are more willing to take risks and even have positive hormonal changes. >> before you go

stressful evaluative situation, for two minutes try doing this. in the elevator, in a bathroom stall. >> reporter: now culty's science is under attack. writing on the website slate, two researchers call her study steve spurrier yus and say when other scientists tried to replicate her experiment they found no effect. >> have there been moments during this back and forth where you've needed a power pose? >> yeah, yeah, of course. >> reporter: in an interview on my new podcast called 10% happier culty pointed out while people in the new study, the one her critics are citing, didn't show hormonal changes after power poses they did report feeling more powerful. she says there need to be more studies. >> i think the worst part is i care so much about the people who are affected by this kind of work, meaning the people who i meet who say, look, changing my awareness of my body has helped me in this way. i don't want to give up on something because atu

replicate it. >> reporter: to fight the controversy, custokuddy canneds her science and recommends two minutes in a power pose may change your mindset and improve your results. if you want to see more of my interview, check out the 10% happier podcast on abcnews.com or apple podcast, search for 10% happier. thanks for watching "nightline." tune into gma first thing in the morning. as always we're online 24/7 on our "nightline" facebook page and at abcnews.com. thanks for watching and good night. mom, this is not right. her coming over here with dad, sitting across the table from you... it's just--it's got to be too weird for you. no, debra, it won't be. we talked about it, and, really, i'm fine. i don't like this at all. all right, come on, ma. no. marie, what do you think? well, bringing some girl, some floozy to dinner with his ex-wife--

oh, i don't think she's a floozy, marie. then why date her? i mean, how can he already have a girlfriend? you've only been apart eight months. yeah, it's unbelievable. thank you, robert. how come i can't find a girlfriend? you know, mom, i just don't think that you-- deb, deb, deb, i think if your mom's okay with it, isn't that what's important? honey, you know i still care for your father very much, and if this girl is what he needs to feel better about himself, feel younger, i say good for him. okay? i guess. yeah. okay. good, good. and who knows? soon i just may be out there looking for an eligible younger man myself. ha ha ha.