Former President Barack Obama will headline a campaign rally in Detroit later this month, bringing some Democratic star power to a key battleground.

Michigan is playing host to an open Senate race seen as pivotal to Democratic hopes of flipping the Senate. Polls show Democrat Abdul El-Sayed in a tight contest against Republican former Rep. Mike Rogers. Democrats are also seeking to hold on to the governor’s mansion, with Secretary of State Jocelyn Benson taking on GOP Rep. John James.

The Michigan Democratic Party announced Monday that Obama would appear at the rally with Benson, El-Sayed and other state Democrats on Oct. 24, 10 days before the midterm elections. 

Obama’s visit comes as El-Sayed tries to repair divisions among Michigan Democrats after narrowly winning the Senate nomination over the more moderate Rep. Haley Stevens. Some Jewish Democrats have also been wary of El-Sayed’s positions on Israel. As part of his efforts to foster party unity, El-Sayed campaigned over the weekend with Democratic Sen. Elissa Slotkin, who is Jewish.

Obama remains a popular political figure, especially among Democrats. A June CNN/SSRS poll found that 57 percent of Americans viewed him favorably, including 96 percent of Democrats. 

Still, the former president has been a more limited public presence so far this campaign season. Over the summer, he endorsed Democrat Josh Turek’s Senate campaign in Iowa, appearing in a video while the two played basketball. In May, he campaigned in Texas with James Talarico, the Democratic nominee for Senate, and Gina Hinojosa, who is running for governor. 

House Minority Leader Hakeem Jeffires told reporters on a press call Sunday that Obama was part of the party’s “all-hands-on-deck effort” to flip the House next month. Obama attended a fundraiser for the Democratic Congressional Campaign Committee in New York City last month and reportedly will headline a fundraiser for Senate Democrats’ campaign arm this week. 

Obama’s increased presence on the campaign trail comes as President Donald Trump has picked up his campaign activity, trying to drive up Republican turnout and fight through the headwinds facing the GOP. Over the past week, the president has held rallies in deep-red areas such as Oklahoma, Alabama and Ohio. 

On Monday, he’s set to hold a rally in Nebraska, where GOP Sen. Pete Ricketts faces a challenge from independent Dan Osborn. Trump reportedly also has stops scheduled this week in San Antonio, where he will campaign for GOP Senate hopeful Ken Paxton, and upstate New York, where he will appear with gubernatorial nominee Bruce Blakeman.