Ted Cruz got a prime speaking slot at Donald Trump’s Republican National Convention on Wednesday, but he came and went from the stage without endorsing the party's newly minted nominee. 
 
 The Texas senator not only failed to endorse Trump at any point during his 23-minute remarks, he also encouraged Republicans to “vote their conscience.” 
 
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 “To those listening, please, don’t stay home in November,” Cruz said, a plea that suggested he was about to endorse Trump. But he didn’t. 
 
 “If you love our country and love your children as much as I know that you do, stand and speak and vote your conscience,” Cruz said. “Vote for candidates up and down the ticket who you trust to defend our freedom and to be faithful to the Constitution.” 
 
 When it became clear that Cruz was not was not offering a direct endorsement, the crowd broke out in boos that continued for the balance of Cruz's remarks, shouting "We want Trump" as Cruz wrapped his speech. 
 
 And that wasn't the only interruption. Toward the end of Cruz's remarks, Trump himself made a previously unannounced entrance into the arena, prompting cheers and pulling the attention away from the main stage. 
 
 Republicans were livid with Cruz for declining to endorse. Mississippi state Rep. Becky Currie blasted Cruz, calling him “stupid” after proving that he “apparently only thinks of himself.” 
 
 “If he came here to really unite the party, he would have stood behind the candidate the people chose," Currie, who shouted “Trump” with others in the crowd as Cruz finished his speech, told POLITICO. 
 
 Cruz had been largely silent since he returned to the Senate following a brutal primary loss to the real estate mogul in May but was given a prime-time speaking slot despite having not endorsed Trump. But his early comments signaled an imminent endorsement despite reports that it was unlikely. 
 
 “Heidi and I are so honored to join you here in Cleveland, where LeBron James just led an incredible comeback victory. And I am convinced America is going to come back, too,” Cruz said at the outset of his remarks, which came directly before those of the nominee’s son, Eric Trump. 
 
 Ted Cruz's full speech at the RNC 
 
 “I want to congratulate Donald Trump on winning the nomination last night,” he said less than two minutes in, sparking raucous applause. “And like each of you, I want to see the principles that our party believes prevail in November.” 
 
 But he soon shifted his tone, even referencing his failed White House campaign — as well as the campaigns of all the GOP primary candidates — by explaining “why you and millions like you devoted so much time and sacrifice to this campaign. We’re fighting, not for one particular candidate or one campaign, but because each of us wants to be able to tell our kids and grandkids … that we did our best for their future and our country.” 
 
 Cruz largely focused on his message of America flourishing under the leadership of a true constitutional conservative as he ticked through a number of conservative principles, possibly hinting at another White House run in 2020. 
 
 The Texas senator acknowledged the divisiveness that has dominated this campaign cycle, but he declined to take a step toward mending his fractured party that many Republicans had called for. 
 
 Cruz has remained one of the GOP’s most prominent holdouts even as other former Trump rivals offered tepid endorsements of the controversial Republican nominee. Cruz, the candidate who was best positioned to deny Trump the nomination, ended his campaign on bitter terms. Before a decisive loss in Indiana’s primary dealt this campaign a final blow, the Texas senator lit into Trump with a fiery, blistering rebuke. 
 
 Cruz called the real estate mogul, who branded the Texas firebrand “Lyin’ Ted,” a “pathological liar” and “serial philanderer” after Trump had suggested Cruz’s father was somehow involved in John F. Kennedy’s assassination. 
 
 Even so, fellow conservatives in recent days had increased pressure on the Texas senator to fall in line behind Trump. 
 
 Cruz mocked President Barack Obama and Hillary Clinton, suggesting that enough is enough as he argued that Republicans offer a better vision of the future and a return to freedom. And he announced support for Trump’s border wall and two of the RNC’s convention themes. 
 
 “We stand here tonight a nation divided. Partisan rancor, anger, even hatred are tearing America apart,” Cruz said. “And citizens are furious — rightly furious — at a political establishment that cynically breaks its promises and that ignores the will of the people.” 
 
 “We deserve an immigration system that puts America first, and yes, build a wall to keep America safe,” he said, sparking chants to build a wall. But he also made the most of his moment, heeding his own advice. 
 
 “We must make the most of our moments, to fight for freedom, to protect our God-given rights, even of those with whom we don't agree, so that when we are old and gray, and when our work is done and we give those we love one final kiss good-bye, we will be able to say freedom matters and I was part of something beautiful,” he said. “The case we have to make to the American people, the case each person in this room has to make to the American people, is to commit to each of them that we will defend freedom and be faithful to the Constitution.” 
 
 “We will unite the party,” he continued. “We will unite the country by standing together for shared values, by standing for liberty.” ||||| Cleveland (CNN) Ted Cruz on Thursday strongly defended his refusal to endorse Donald Trump during his Republican National Convention speech, saying he's not "in the habit" of backing politicians who attack his family. 
 
 "I am not in the habit of supporting people who attack my wife and attack my father," Cruz said at a morning meeting where he faced sharp questions from the Texas delegation in Cleveland. 
 
 Cruz stood by his decision in a remarkable 25-minute back-and-forth with his own constituents, defying appeals from his own Texas delegation to put the party above his inhibitions and back Trump. 
 
 Cruz sensationally withheld an endorsement of Trump in his speech Wednesday, earning a chorus of boos from the floor while getting upstaged in a power play by the GOP nominee himself. 
 
 In a dramatic development, as Cruz wrapped up his speech, Trump suddenly appeared in the Quicken Loans Arena in Cleveland. He walked to join his family in a VIP area and flashed a thumbs-up -- a gesture that transmitted clear anger at the Texas senator's behavior. 
 
 Cruz, his party's runner-up, uttered Trump's name just once -- to congratulate him -- and instead pitched the ideological brand of conservatism that endears him to the GOP's base. 
 
 "I congratulate Donald Trump on winning the nomination last night," Cruz said. "And like each of you, I want to see the principles that our party believes prevail in November." 
 
 JUST WATCHED Laura Ingraham scolds Trump holdouts: Honor your pledge Replay More Videos ... MUST WATCH Laura Ingraham scolds Trump holdouts: Honor your pledge 01:54 
 
 But as it was clear Cruz was going to end his speech without endorsing Trump, delegates began to boo and some chanted "We want Trump!" 
 
 "Don't stay home in November," Cruz said toward the end of his otherwise very well-received speech. "Stand and speak and vote your conscience." 
 
 As delegates began to protest, Sen. Cruz's wife, Heidi Cruz, was heckled by Trump supporters shouting "Goldman Sachs!" and escorted out by security. Heidi Cruz, who is an employee of Goldman Sachs, declined to answer questions from reporters, saying, "I don't talk to the media, thanks." 
 
 The stunning political theater between the top two contenders in the Republican primary race blew open divisions in the party that the convention is designed to heal, and suggested Cruz believes Trump will lose in November. 
 
 Cruz's appearance at the Cleveland convention had been the subject of intense anticipation over his attitude toward Trump, after their intensely personal exchanges in the late stages of the primary race. 
 
 He got a prolonged standing ovation as he walked on stage for a speech that appeared to be an attempt to establish himself as the guardian of conservative values that some activists doubt Trump shares. 
 
 Blocked from Adelson suite 
 
 Cruz's rebuke ignited a hot scene around the senator as soon as he left the stage. People averted their eyes from Cruz and his wife as they walked with their security detail on the skybox level of boisterous Republicans. 
 
 On the donor suite level, people approached Cruz and insulted him, a source told CNN's Dana Bash. One state party chair reacted so angrily that they had to be restrained. 
 
 Cruz, who has long sought the support of GOP megadonor Sheldon Adelson, was turned away when he tried to enter Adelson's suite. 
 
 Andy Abboud, a senior aide to the Las Vegas casino magnate, said Cruz was initially invited to come up to visit the Adelsons, but when he failed to endorse Trump the invitation was rescinded. 
 
 "When he didn't endorse, they were stunned and disappointed," Abboud told CNN. 
 
 "We could not allow Ted Cruz to use the Adelsons as a prop against Donald Trump," he added. "The Adelsons support Donald Trump and made that clear. They like Ted Cruz, but there was no way the Adelsons were going to be the first stop after not endorsing. That would be disrespectful to our nominee." 
 
 Trump did stop by the suite, and Abboud tweeted out a picture of Trump with Sheldon and Dr. Miriam Adelson. 
 
 The Adelson's with their choice for President! pic.twitter.com/gYsHBeT9AS — Andy Abboud (@AndyAbboud) July 21, 2016 
 
 Trump, whose insults of Cruz were a constant on the campaign trail over the past year, tweeted that Cruz didn't honor the pledge GOP candidates had signed to back the eventual Republican nominee. 
 
 "Wow, Ted Cruz got booed off the stage, didn't honor the pledge! I saw his speech two hours early but let him speak anyway. No big deal!" 
 
 Wow, Ted Cruz got booed off the stage, didn't honor the pledge! I saw his speech two hours early but let him speak anyway. No big deal! — Donald J. Trump (@realDonaldTrump) July 21, 2016 
 
 New Jersey Gov. Chris Christie -- a former presidential candidate and now a Trump backer -- blasted Cruz's speech in an interview with Bash. 
 
 "I think it was awful," Christie said. "And quite frankly, I think it was something selfish. And he signed a pledge. And it's his job to keep his word." 
 
 Trump lawyer Michael Cohen said on CNN that "the only way to describe it is political suicide." 
 
 A source close to Cruz said the senator wasn't shocked by the mood after the speech. 
 
 "He expected people to not approve," the source said. "Not surprised at the reaction." 
 
 Indiana Gov. Mike Pence, who accepted the nomination as Trump's vice presidential nominee at the end of Wednesday's session, sidestepped when asked about Cruz's speech. 
 
 "I am just grateful for all the support we are receiving and I am excited about the future," Pence said. 
 
 JUST WATCHED Wednesday fireworks at the RNC in 90 seconds Replay More Videos ... MUST WATCH Wednesday fireworks at the RNC in 90 seconds 01:30 
 
 Eric Trump's reaction: "The audience didn't seem to like it right?" 
 
 Asked about the impact of the non-endorsement, Eric Trump responded, "I don't think it makes any difference in the world." 
 
 Hillary Clinton's campaign seized on Cruz's speech as well, tweeting: "Vote your conscience" with a link to her website. 
 
 Delegates unhappy as well: 'He failed the nation' 
 
 The reaction from the floor was also swift and harsh. 
 
 Newt Gingrich, appearing after Cruz, argued that Cruz's advocacy for constitutionalism meant that he, implicitly, endorsed Trump -- words he himself did not say. 
 
 "So to paraphrase Ted Cruz, if you want to protect the Constitution this fall, there's only one possible way and that's to vote the Trump-Pence ticket." 
 
 Richard Black, a delegate from Virginia who chaired Cruz's campaign, said after Cruz's speech that it was "doubtful" he would support him again. 
 
 "In the end, each individual has a duty to the nation that transcends the duty to themselves,' Black said. "That's where he failed... He failed the nation." 
 
 Rep. Trent Franks of Arizona, who backed Cruz, told CNN he was "disappointed" by Cruz' speech. 
 
 On him saying "vote your conscience", Franks said, "for the people in this room, a vote of conscience is a Trump vote." 
 
 Michigan GOP Rep. Bill Huizenga, a former Marco Rubio supporter, called Cruz' speech "a mistake." 
 
 Huizenga said it was also a mistake for the Trump campaign to give Cruz a coveted prime-time speaking slot without some type of "pre-condition" that he would formally endorse Trump. 
 
 Jonathan Barnett, a Republican national committeeman from Arkansas, walked off the floor after Cruz's speech. 
 
 "He's self-centered. It's all about Ted Cruz. All he did is ruin his political career," Barnett said. "I think he's finished." 
 
 Barnett said this is not the kind of grace one shows their party's nominee: "Reagan wouldn't have done that. He endorsed Ford." 
 
 Arizona delegate Bruce Ash expressed a similar sentiment. 
 
 "Cruz missed his moment. All he had to do was say 'Trump' and he used the dog whistle for 'conscience.' A very disappointing message," Ash texted. 
 
 Cruz's difficult challenge 
 
 The speech was difficult from the start: Cruz's goal was to walk a tightrope and keep alive his political viability for 2020 without alienating Trump's legion of supporters. 
 
 JUST WATCHED Trump's plane interrupts Ted Cruz Replay More Videos ... MUST WATCH Trump's plane interrupts Ted Cruz 00:55 
 
 It was the latter that tripped him up. 
 
 Cruz came to the dais facing significant pressure to endorse Trump from his campaign aides and surrogates. Yet he is still at a moment of power and relevance: Only 45, a Latino senator who ended his campaign holding onto more political capital than he has ever enjoyed in his career. 
 
 His challenge was to remain well-liked in a GOP that, at least for now, is under the control of a man Cruz has indicated that he does not respect. Cruz effectively placed a risky bet that the Republican Party will judge Trump harshly and reward him in the new era for not caving. 
 
 "If skillfully played, his stock will rise," Randall Dunning, a Texas delegate who has misgivings about Trump, said the day before he spoke. 
 
 Wes Brumit, a Cruz delegate from Texas, defended Cruz's non-endorsement Wednesday night. 
 
 "He did mention all the points Trump mentioned: building a wall, fighting ISIS. He just didn't come right out and endorse," said Bumit, who sported a red "Ted Cruz for President" T-shirt and a cowboy hat. "He said everyone should be able to vote their conscience. And that's OK with me." 
 
 JUST WATCHED Trump: Heidi the best thing Cruz has got going for him Replay More Videos ... MUST WATCH Trump: Heidi the best thing Cruz has got going for him 04:28 
 
 As for those who loudly booed Cruz? "All the boos were exactly the New York values that Ted has talked about." 
 
 Bumit added: "I think Mr. Trump has some things to apologize for to Cruz before Sen Cruz can come onboard fully for Trump." 
 
 But the question now is how skillful Cruz played it. If Trump loses narrowly, holdouts like Cruz could be held responsible in 2020 for not unifying the party. And it is clear there are Trump loyalists who now say they are loathe to back him. 
 
 JUST WATCHED Trump doubles down on JFK assassination-Cruz dad link Replay More Videos ... MUST WATCH Trump doubles down on JFK assassination-Cruz dad link 01:33 
 
 Cruz and Trump, once political allies, turned on one another as they became the top two Republicans in the race. And their tension exploded when Trump's associates fanned flames of salacious tabloid rumors about Cruz and later attacked Cruz's father. 
 
 Since withdrawing from the race, Cruz has repeatedly declined to endorse Trump, but maintained that he could always come around to backing the Republican nominee. Yet their past tension -- and the personal attacks -- cast a cloud over any accord between the two aspirants. 
 
 Cruz's chief strategist Jason Johnson tweeted: "Since it's obvious the shock is contrived, let me ask: What the Hell did they expect from the son of the man who killed JFK? Light'n up." 
 
 Since it's obvious the shock is contrived, let me ask: What the Hell did they expect from the son of the man who killed JFK? Light'n up. — Jason Johnson (@jasonsjohnson) July 21, 2016 
 
 Former Cruz aide Brian Phillips also defended the senator: "Just more proof this is about submission. We were told for months Trump didn't need Cruz, but when he doesn't endorse they go apoplectic." 
 
 Just more proof this is about submission. We were told for months Trump didn't need Cruz, but when he doesn't endorse they go apoplectic. — Brian Phillips (@RealBPhil) July 21, 2016 
 
 The remarkable moment at the convention was the second time Cruz was upstaged by Trump Wednesday. 
 
 At a rally on the Cleveland waterfront, as Cruz spoke gingerly to fellow Republicans about "our nominee" and the uncertain future under his former rival, Trump's plane flew in the clear skies behind him. 
 
 "That was pretty well orchestrated" Cruz said as the Trump-emblazoned aircraft buzzed through the air and the crowd booed. 
 
 Turning to his campaign manager, Jeff Roe, Cruz said, "Jeff, did you email them to fly the plane right when I said that?"
– Ted Cruz stood before the third night of the Republican National Convention on Wednesday with an entire convention center awaiting the answer to the question: Will he endorse Donald Trump or won't he? The answer came late in a speech that was well received until the end. "We stand here tonight a nation divided," Trump's final Republican rival opened, before congratulating Trump on winning the nomination. But as Cruz's prime-time speech, which focused on freedom, neared its finish, it became clear he would not endorse the GOP nominee, proclaiming that Republican voters should not stay home in November, but rather "vote your conscience." As chants of "We want Trump!" broke out among the crowd, Cruz replied, per Politico, "I appreciate the enthusiasm of the New York delegation." Or as Andrew Sullivan put it at New York, "open war is breaking out, as the crowd is beginning to shout Cruz down." Trump himself appeared side-stage, seemingly to suck oxygen from Cruz's moment. Writes Sullivan: "Cruz leaves to a massive wall of hostile noise."