Democratic presidential nominee Joe Biden holds a steady lead over President Trump in the key battlegrounds of Michigan and Nevada, while the race remains a dead head in Iowa, according to a new poll.

A CBS News-YouGov tracking poll taken between Oct. 6 and Oct. 9 found Trump trailing Biden by 6 points among registered voters in Michigan and Nevada, 52 percent to 46 percent in both states. In Iowa, both candidates registered support from 49 percent of registered voters.

The polls paint a bleak picture for the president, whose 2016 victory was largely made possible by a narrow win in Michigan, while former Secretary of State Hillary Clinton (D) won Nevada by less than 3 points. Trump won Iowa comfortably in 2016.

Democrats also hold the edge in two Senate races measured by the CBS-YouGov poll.

In Michigan, Sen. Gary Peters (D) leads Republican challenger John James 47 percent to 44, while in Iowa, Democratic challenger Theresa Greenfield leads incumbent Sen. Joni Ernst (R) 47 percent to 43 percent.

Biden is buoyed in Nevada by a 2-to-1 advantage over the president among Hispanic voters, according to the poll, and he holds a 9-point lead among independent voters in Michigan.

The CBS-YouGov poll surveyed 1,048 registered voters in Iowa, with a margin of error of 3.5 percentage points; in Michigan, 1,215 were polled, with a 3.2 percentage point margin of error; and in Nevada, 1,052 answered, with a margin of error of 4.1 percentage points.