With about 8.4 million registered voters and 15 electoral college votes out of the 270 needed to win, Michigan is one of seven competitive states that will decide the election.

For Kamala Harris, it’s part of the so-called “Blue Wall,” which is considered the Democrats’ best chance to win, along with Pennsylvania and Wisconsin.

Donald Trump is battling Ms. Harris for voters in Michigan, including a large Arab-American and Muslim population, many of whom are concerned about Israel’s war on Gaza.

The state is also home to unionized workers concerned about how electric vehicles could reshape the nation’s auto industry, which is based in the state’s largest city, Detroit.

While Ms. Harris leads Trump nationally 46 percent to 43 percent — according to a recent Reuters/Ipsos poll — in Michigan, Ms. Harris’ lead is even slimmer — 47.6 percent to 47.1 percent — according to poll aggregator FiveThirtyEight.

Democratic President Joe Biden won the state by 150,000 votes in the 2020 election against Mr. Trump, a margin of less than 3 percent, while Mr. Trump won by 11,000 votes in 2016.