LANSING, Mich. (AP) — President Donald Trump and Democrat Joe Biden were locked in a tight race in battleground Michigan early Wednesday, with thousands of ballots yet to be tallied in a state whose 16 electoral votes may prove crucial.

Democrats were cautiously optimistic because many outstanding ballots were due from populous areas friendly to them, such as Detroit and Grand Rapids. About 5.1 million ballots had been counted as of 10 a.m., already breaking the turnout record from 2008.

As of late this morning, Biden led 2,520,063 to 2,510,069 for Trump, with 90% of the votes reported.

Secretary of State Jocelyn Benson has said she expected to have “a very clear picture, if not a final picture” of the results by Wednesday night, according to the New York Times.

Trump was looking to again claim the state he narrowly won four years ago. Democratic nominees held the state for decades before Trump, and Biden was hoping to put Michigan back in the blue column.

The contest between first-term Democratic Sen. Gary Peters and Republican challenger John James also was close and too early to call.

With 89% reported, James led Peters, 2,483,054 to 2,449,043, a margin of only 34,011 votes.