Conservative radio host Mark Levin endorsed Ted CruzRafael (Ted) Edward Cruz2 Republican senators introduce resolution to label antifa as domestic terrorists Ted Cruz: Trump's chances of winning reelection are '50-50' How to reduce Europe's dependence on Russian energy 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 ClintonGeorge Takei: US has hit a new low under Trump Democrats slam Puerto Rico governor over 'shameful' comments, back protesters Matt Gaetz ahead of Mueller hearing: 'We are going to reelect the president' 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 TrumpLiz Cheney: 'Send her back' chant 'inappropriate' but not about race, gender Booker: Trump is 'worse than a racist' Top Democrat insists country hasn't moved on from Mueller MORE, Marco RubioMarco Antonio RubioAna Navarro lashes out at Rubio for calling outrage over Trump's 'go back' tweet 'self righteous' US-Saudi Arabia policy needs a dose of 'realpolitik' Media cried wolf: Calling every Republican a racist lost its bite 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.