Cleveland (CNN)Ted Cruz sensationally withheld an endorsement of Donald Trump at the Republican National Convention on Wednesday, earning a chorus of boos from the floor before he was 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."
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.
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 chairman reacted so angrily that he 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 after the rebuke, three sources tell CNN.
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 sai
