Rep. Paul Ryan's primary challenger ratcheted up his attacks on Monday. | Getty Ryan challenger: Ryan went from Wienermobile to Congress

Rep. Paul Ryan's (R-Wis.) primary challenger ratcheted up his attacks on Monday, slamming the speaker of the House for his lack of business sense and experience necessary to hold a prominent leadership position in the United States government.

“I went from being a maintenance mechanic in a factory at 18 years old to running businesses. I ran that business, I ran businesses all over the U.S. I was in charge of Europe, the Middle East and Africa for a Fortune 500 company," Paul Nehlen told Laura Ingraham on her radio show.


He added, "Paul Ryan went from driving the Wienermobile in Wisconsin to Congress. That’s what you’re dealing with here.”

The comment is a reference to Ryan's college job as an Oscar Mayer salesman in which he got a turn at the wheel of the famous hot-dog shaped vehicle.

“The bottom line is you have experience in business and he doesn’t," Ingraham said. "You got it," Nehlen responded.

Nehlen currently serves as senior vice president of Neptune Benson, a company that specializes in water filtration and disinfection. He also founded a small business, Blue Skies Global LLC, which the candidate's personal website characterizes as one that "leverages key networks and technologies on behalf of the companies with which it partners, in order to ensure that they can deliver outstanding, cost-effective engineered products and projects."

Sarah Palin said she would campaign for Nehlen on Sunday, remarking that he is "soon to be Cantor-ed,” in reference to Dave Brat's upset primary victory over House Majority Leader Eric Cantor in 2014. Palin's pledge came after Ryan said could not yet support Donald Trump as the Republican Party's presidential nominee.

Ryan "has some nerve" for his reluctance in supporting Trump, Nehlen said.

“Donald Trump, in my eyes, is an agent for change," Nehlen continued, and "Paul Ryan doesn't respect that."

Asked whether his message would be undermined if Ryan and Trump emerge from their scheduled meeting this Thursday with a more unified front, Nehlen said continued attacks on Ryan would not constitute assaults on Republican unity.

"Paul Ryan’s giving our jobs away," Nehlen said. "Paul Ryan is absolutely giving our jobs away with saying that we’re not going to cut H-1B visas."