Eliza Collins

USA TODAY

CLEVELAND — Ted Cruz hasn’t changed his mind on Donald Trump.

The Texas senator was speaking to the Texas delegation in Cleveland on Thursday morning where he was repeatedly pressed and declined to endorse (or even commit to voting for) Trump. On Wednesday night, he was booed off the stage after telling voters to "vote your conscience" but not endorsing the party's nominee.

“I am doing what millions of Americans are doing I am watching, I am listening,” Cruz said. “The election isn’t today,” he added.

Cruz said he had been very clear about his intention to the Trump campaign, even telling Trump he would not endorse him in a conversation before the convention and letting the campaign read his speech hours before.

“I assume there’s a reason the Trump campaign wanted me to speak,” he said.

Some delegates angrily confronted Cruz (at one point someone in the breakfast angrily shouted “your word is your bond” to cheers from the crowd) for not keeping to the Republican pledge.

Cruz responded that when he originally made the pledge he had every intention of keeping it until the race became personal.

“I am not in the habit of supporting people who attack my wife and who attack my father,” he said. Adding he would not be "a servile puppy dog" to the Trump campaign.

During the primary campaign, Trump sent out Twitter messages threatening to "spill the beans" about Cruz's wife, Heidi, and Trump implied that Cruz's father had been photographed with Lee Harvey Oswald, the assassin who killed President John F. Kennedy.

Someone yelled “this is politics!”

Cruz responded: “This is not a game, this is not politics.”

Trump and aides attack Cruz over non-endorsement