Four years after being among the Midwestern battlegrounds that delivered Trump's upset victory, Michigan, with its 16 electoral votes, has polled steadily in favor of Biden ahead of the November 3 election.
In the past five elections, the state had been consistently voting for a Democrat. In 2016, Trump beat Hillary Clinton by a very narrow margin of just over 10,000 votes.
Analysts believe if Biden can mobilize African-American voters in the state's largest city, majority Black Detroit, it could go a long way to overcoming the fewer than 11,000-vote advantage Trump had in the state in 2016.
Both candidates are trying to convince voters they are best suited to revive the economy in the state, where the once-proud manufacturing base has suffered from decades of overseas outsourcing.