Joe Biden is maintaining his lead over President Trump in the key swing state of Michigan, according to a new poll released Tuesday morning.

According to a survey conducted by Progress Michigan, a Democratic-leaning firm, 50% of registered voters in Michigan say they would cast a ballot for Biden if the election were held the same, with 44% saying the same for Trump. Four percent say they would vote for a third-party candidate, and 2% haven’t made up their minds.