Rogers and El-Sayed are set for their first debate in Michigan's Senate race after sparring online

GRAND RAPIDS, Mich. (AP) — Republican Mike Rogers and Democrat Abdul El-Sayed, competing for an open U.S. Senate seat in Michigan, are set for their first campaign debate Thursday after weeks of sparring both online and in advertisements that are flooding the state in one of the nation's most closely watched races.

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For Rogers, a former congressman who was unchallenged in the Aug. 4 primary, the evening debate in Grand Rapids will be his first since facing off two years ago against then-U.S. Rep. Elissa Slotkin in a Senate race that the Democrat won by just under 20,000 votes .

El-Sayed, a progressive who is a former public health official, participated in multiple primary debates against U.S. Rep. Haley Stevens before capturing the nomination by less than a percentage point and advancing to the Nov. 3 general election.

His debate with Rogers comes after an increasingly combative stretch in the campaign.

President Donald Trump assailed El-Sayed in a social media post late Wednesday, referring to him as "Mohammed" and saying he "goes back to the days of the Jihad."

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"He is a RADICAL Extremist, Terrorist Sympathizer," Trump wrote on Truth Social.

El-Sayed, who was born in the U.S. to Egyptian immigrant parents, responded by pointing out that the president knows his name: "He says it every day."

"He's not just attacking me. He's attacking all of us," El-Sayed wrote. "He thinks he can use my name and my faith to distract us from the suffering his policies are inflicting on us."

El-Sayed, trailing nearly 2-to-1 in ad spending, has crisscrossed the state for events while also sitting for interviews ranging from Fox News to The New York Times' Ezra Klein. He has often used those appearances to go after Rogers.

"We are running to win the race. He's running not to lose the race," El-Sayed said of Rogers during a Tuesday interview with The Associated Press.

Rogers has held fewer public events while outside groups have spent heavily on ads.

Rogers' campaign did not make him available for an interview before the debate. He is scheduled to appear Friday in Oakland County with Sen. John Kennedy, R-La.