Biden has significant edges in both states among Black voters, women, independents and seniors. Trump‘s biggest edge is among evangelical Christians.

In both states, a majority of those polled said the election winner should fill the vacant Supreme Court seat that Trump nominated Amy Coney Barrett for on Saturday: 54 percent in Michigan and 56 percent in Wisconsin. The polls were conducted before Trump announced the selection of Barrett.

In the race for the Senate in Michigan, Democratic incumbent Gary Peters leads GOP challenger John James by a margin of 49 percent to 44 percent.

Meanwhile, in the CBS News Battleground Tracker polls, Trump led Biden by a single point, 47-46, in Georgia but trailed Biden, 48-46, in North Carolina. Trump won both those states in 2016, and Republicans have, in particular, dominated voting in Georgia in recent decades.

The president has a 10-point edge in South Carolina, 52-42, according to a third CBS presidential poll. Much closer is the Senate race in that state, where incumbent Republican Sen. Lindsey Graham leads Democratic challenger Jaime Harrison by a single point, 45-44.

Another senator in trouble, according to CBS polling, is North Carolina Republican Thom Tillis, who trails Democratic challenger Cal Cunningham by a margin of 48 percent to 38 percent.

The NBC News/Marist Poll of Michigan was conducted Sept. 19-23, and the NBC News/Marist Poll of Wisconsin was conducted Sept. 20-24. Margins of error varied in different categories, ranging from 3.6 percentage points to 4.6 percentage points.

The CBS surveys were conducted by YouGov from Sept. 22 to Sept. 25. They are based on 1,164 registered voters in Georgia, 1,213 in North Carolina, and 1,080 in South Carolina. Margins of error for registered voters are +/- 3.3 points in Georgia, +/- 3.6 points in North Carolina, and +/- 3.8 points in South Carolina.