Decmoratic vice presidential candidate Sen. Kamala Harris is set to campaign Tuesday in Flint and Detroit.
The latest polls show her ticket ahead in Michigan by 8 to 11 percentage points. But President Donald Trump still considers the state up for grabs.
In August, Harris held a remote event in Detroit aimed at mobilizing the Black vote.
Details of this week's appearances aren't released yet.
Trump won Michigan in 2016 by 10,704 votes.