In the videos, Colbeck told a group in April that only he can defeat El-Sayed.

Using slides, Colbeck calmly expressed fears that Muslims, through powerful lobbyists and ascendant politicians, were trying to bring “sharia law” to Michigan, “push Islam into our churches” and “exercise influence” over the entire state by reaching the state’s top political post.

“There are a lot of pressures that are being applied in our society right now. You’re seeing Muslim legislators in the state legislature and you’re seeing also a push … at the local level,” Colbeck said as he showed a slide with El-Sayed’s photo.

“But we also have somebody that I will likely be running against in the general election, Dr. Abdul El-Sayed, whose parents apparently have ties to the Muslim Brotherhood back in Egypt. This is scary stuff.”

In an email, Michigan GOP spokesman Sarah Anderson said the party isn’t interested in peddling conspiracy theories.

“We categorically condemn any sort of hate speech, regardless of the source,” she wrote.

Asked for comment about the statements, Schuette didn't mention Colbeck at all.

"Bill took an oath to defend the Constitution and enforce the laws of the State of Michigan and he believes that all people must be treated with dignity and respect,” his campaign spokesman, John Sellek, wrote in an email.

Hines issued a statement Thursday saying he supports the U.S. and Michigan constitutions.

"Anyone elected to office in Michigan must swear (or affirm) to support both Constitutions. No one, regardless of faith, should be discriminated against," the statement read. "All people should be treated with dignity and respect. Senator Colbeck has taken that Oath twice and should understand this."

El-Sayed issued a statement saying he is an “unapologetic, proud Muslim and American” and called Colbeck’s comments the “ugly face of white supremacy.”

He said the state’s residents don’t care “how I pray, but what I pray for - and what I care about.”

Later Wednesday, his campaign sent an email about Colbeck’s comments to supporters and asked for donations.

“Look, America’s never seen a Muslim governor before. We knew ignorant attacks would come our way,” the email read, before promising to stay focused and fight for progressive causes.

Gretchen Whitmer, a former Senate minority leader and presumed Democratic frontrunner, said Colbeck’s “decision to use fear and conspiracy theories in an attempt to discredit another candidate is unacceptable.”

The other Democrat campaigning for governor, Ann Arbor entrepreneur Shri Thanedar, did not weigh in on the controversy Wednesday.

Colbeck did not back down. He defended his comments on Twitter and exchanging in a brief exchange with the Council on American-Islamic Relations, claiming it could find “no evidence of any innaccurate (sic) statements on my part.”

On Friday, Colbeck issued a statement calling his assertions are true and saying he didn't deserve criticism from "Democrats and their allies in the media."

"Why such a backlash?... Well, there are really only two explanations – willful ignorance or deliberate deception," Colbeck's statement read. "Media outlets which continue to propagate all of the derogatory remarks directed towards me are guilty of one or the other. It is now time to hold those who are making these derogatory remarks accountable."

Dawud Walid, a Michigan representative of CAIR, said El-Sayed doesn’t have ties to the Muslim Brotherhood, a group that would reject the candidate’s support for gay rights and the legalization of marijuana.

Brian Began, a Republican and elections director for the group Grassroots Midwest, called the statements a “wacko conspiracy theory” and “sad and desperate reach for Patrick Colbeck.”

GOP pollster Steve Mitchell said it’s unlikely either Colbeck or El-Sayed will prevail in the August primary, and candidates don’t need to respond.

“You’re giving him a platform on an issue he doesn’t need a platform for,” Mitchell said.