Gary Johnson Gary Earl JohnsonWhat the numbers say about Trump's chances at reelection Presidential race tightens in Minnesota as Trump plows resources into state The Hill's Campaign Report: Biden condemns violence, blames Trump for fomenting it l Bitter Mass. primaries reach the end l Super PAC spending set to explode MORE on Thursday said Sen. Ted Cruz Rafael (Ted) Edward CruzMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (R-Texas) essentially called on people to vote for the Libertarian Party nominee during his GOP convention speech.

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"Well, he did say to vote for Gary Johnson, didn't he?" Johnson said Thursday on CNN.

"And that was 'vote your conscience,' " he said with a laugh.

Cruz declined to endorse Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE for president on Wednesday night while speaking at the Republican National Convention in Cleveland, telling the crowd instead, "vote your conscious." His decision stirred controversy and drew loud jeers from the crowd.

Cruz also said during the speech that people need to vote for a candidate who will uphold the Constitution.

Johnson said he would "certainly" uphold the Constitution as president.

"We are a country governed by laws, and the heart of those laws are the Constitution," Johnson said.

"And Donald Trump, wasn't he saying that he's going to look at making it easier to sue the media — First Amendment, what's that? First Amendment, that's in the Constitution of the United States."