Story highlights Palin said her decision was sparked by Ryan's announcement that he wasn't yet ready to support Donald Trump

"I think Paul Ryan is soon to be 'Cantored,' as in Eric Cantor," Palin said

Washington (CNN) Sarah Palin will work to defeat House Speaker Paul Ryan by backing his primary opponent in Wisconsin, the former Alaska governor told CNN's Jake Tapper.

Palin said in an interview that airs Sunday on "State of the Union" that her decision was sparked by Ryan's bombshell announcement to Tapper last week that he wasn't yet ready to support Donald Trump, the Republican presumptive nominee. Palin endorsed Trump back in January.

"I think Paul Ryan is soon to be 'Cantored,' as in Eric Cantor," Palin said, referring to the former Republican House majority leader who was ousted in a shocking upset in 2014 when challenger Dave Brat ran to his right in a Virginia primary.

"His political career is over but for a miracle because he has so disrespected the will of the people, and as the leader of the GOP, the convention, certainly he is to remain neutral, and for him to already come out and say who he will not support is not a wise decision of his," Palin continued.

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