Conservative radio host Mark Levin endorsed Ted CruzRafael (Ted) Edward CruzThe Hill's Campaign Report: 2020 Democrats trading jabs ahead of Los Angeles debate Senate Republicans air complaints to Trump administration on trade deal Senate passes Armenian genocide resolution MORE for president late Wednesday as a tribute to former first lady Nancy Reagan.

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“I decided today was the day ultimately because of Nancy Reagan’s death,” he said on “LevinTV.”

“If you’re 45 years old or younger, you’ve never had the opportunity to vote for a conservative for president of the United States,” Levin continued. “You don’t know what it’s like — how invigorating it is, how exciting it is, how you become an activist even when you weren’t planning to be,” he added.

“Let me suggest if [Cruz] gets the nomination, he will get elected president of the United States. If you just think about it in your mind’s eye, there on the stage, Hillary ClintonHillary Diane Rodham ClintonMore than 200,000 Wisconsin voters will be removed from the rolls Trump is threatening to boycott the debates — here's how to make sure he shows up Trey Gowdy returns to Fox News as contributor MORE and Ted Cruz, I think he’d wipe the floor with her.”

Levin said that his endorsement of Cruz does not mean he is opposed Cruz's Republican rivals, Donald TrumpDonald John TrumpDemocrats ask if they have reason to worry about UK result Trump scramble to rack up accomplishments gives conservatives heartburn Seven years after Sandy Hook, the politics of guns has changed MORE, Marco RubioMarco Antonio RubioWhite House makes push for paid family leave and child care reform Tom Hanks weighs in on primary: 'Anybody can become president' GOP senator blocks bill aimed at preventing Russia election meddling MORE or John Kasich.

"My support is because I honestly believe that this is a man who understands where this country has been and where it needs to go,” Levin said. “If you’re a conservative, if you’re a constitutionalist, if you’ve been a Tea Party activist, if you’re a Reaganite or a Reagan Democrat, it really is in the end a simple decision.”

Levin defended Cruz from Trump two months ago, offering the outspoken billionaire some "friendly advice" about conducting himself as a presidential candidate.

"Either cut the crap — your accusations this morning that Cruz is a Canadian, a criminal, owned by big banks, etcetera, or you will lose lots and lots of conservatives," he said.

"Save the liberal New York bully tactics for the New York liberals. Put down your computer keyboard for a few hours, think before you tweet and collect yourself."

This report was updated at 8:18 a.m.