Of the five Senate contests polled, Democrats are strongest in Arizona, where ex-astronaut Mark Kelly — the fundraising dynamo and husband of former Rep. Gabby Giffords (D-Ariz.) — leads Sen. Martha McSally (R-Ariz.) by 16 percentage points, 52 percent to 36 percent, with backing from 14 percent of Republicans. Kelly’s advantage is 9 points larger than Biden’s lead over Trump in the battleground state.

In Michigan, one of the Senate GOP’s few offensive targets this year, Democratic Sen. Gary Peters leads Republican John James, a veteran and businessman, 49 percent to 35 percent. Peters’ lead is roughly in line with Biden’s 10-point edge in the Wolverine State, and comes as his challenger asks voters to look beyond the presidential contest in the Senate race.