Harris will appear at a town hall-style event in Detroit hosted by the morning radio program "The Breakfast Club," featuring Charlamagne Tha God, who is especially popular with Black males. Trump, meanwhile, will tape a Fox News Channel town hall featuring an all-female audience and moderated by host Harris Faulkner.

The vice president was also scheduled to stop by a Black-owned business in Detroit. A day earlier, she visited LegendErie, a coffee shop and record store in Erie, Pennsylvania, where she met with the husband-and-wife owners, a local pastor and other community leaders.

Harris' running mate, Minnesota Gov. Tim Walz, is unveiling his ticket's plan to improve the lives of rural Americans. It's yet another sign that in a razor-tight race, each side is trying to cut into the other's margins of support with different voting blocs while shoring up traditional areas of strength.

The vice president's "Breakfast Club" appearance comes one day after she announced a series of new proposals dubbed the "Opportunity Agenda for Black Men." The ideas are meant to offer the demographic more economic advantages, including providing forgivable business loans of up to $20,000 for entrepreneurs and creating more apprenticeships. The plan would also support the study of sickle cell and other diseases more common in Black men.

The focus on Black men sharpened last week when former President Barack Obama campaigned for Harris in Pittsburgh and said he wanted to speak "some truths" to Black male voters, suggesting some " just aren't feeling the idea of having a woman as president."

The vice president's campaign says it doesn't believe Black men will flip in large numbers to supporting Trump, especially after strongly backing Democrat Joe Biden, with Harris as his running mate, in 2020. They are more concerned about a measurable percentage of Black males opting not to vote at all.

Similarly, Trump figures to do well with rural voters, but team Harris hopes to at least keep things closer. And while Harris' support among women is strong, Trump aims to keep her from running up the score.

Harris' campaign has also placed special emphasis on other male voters, including creating " Hombres con Harris," or "Men with Harris," a group that is using celebrities and key elected officials to organize events on her behalf meant to appeal to Hispanic men.

As she campaigns in Detroit, Harris faces other potential challenges in Michigan, including Arab activists angered by the Biden administration's full-throated support for Israel in its war with Hamas in Gaza. Dearborn, outside Detroit, is the largest Arab-majority city in the U.S.

Still, the vice president's campaign expects to see strong support on Election Day from white, college-educated voters in Michigan at rates that might exceed Biden's in 2020, and she hopes to expand the margin by which Trump lost many of the state's key suburbs four years ago.

Trump, meanwhile, has seen his support among women, especially in the suburbs of many key swing states, soften since his term in the White House. A September AP-NORC poll found more than half of registered voters who are women have a somewhat or very favorable view of Harris, while only about one-third have a favorable view of Trump.

To reverse the trend, Trump has sought to cast himself as being able to personally shield women from various threats, as when he suggested at a rally in Pennsylvania last month that women in America, "will no longer be abandoned, lonely or scared. You will no longer be in danger."

"You will be protected, and I will be your protector," Trump said then. He's also suggested that, should he win, women will no longer have a reason to think about abortion, after three Supreme Court judges that he appointed helped in 2022 to overturn the landmark Roe v. Wade decision that had guaranteed a woman's right to the procedure.

Elsewhere on Tuesday, Trump has an economic speech in Chicago and a rally in Atlanta.