Photo: Doug Mills-Pool/Getty Images

Joe Biden leads President Trump 48% to 42% in Wisconsin and 49% to 43% in Pennsylvania, according to the latest CBS/YouGov Battleground Tracker poll.

Why it matters: Trump's surprise wins in the two states, where many voters broke his way after deciding the week before the election, helped propel him to an Electoral College victory over Hillary Clinton. Trump won Wisconsin with 47% of the vote and Pennsylvania with 48% in 2016, according to the New York Times.

By the numbers: In both states, 47% of voters view Biden as better equipped to respond to the coronavirus pandemic. 37% of voters in Pennsylvania say Trump would better handle the pandemic, while only 32% of voters in Wisconsin said the same.

The big picture: 85 days from Election Day, the warning signs are flashing bright red for Trump's re-election prospects as voters look poised to reject his handling of the COVID-19 crisis. Anything can happen — but right now, every measurable trend is going against Trump.

What to watch: Nearly half of the voters who said they would pick Biden over Trump responded that Biden's choice for vice president could push them one way or another.

Methodology: The surveys were conducted for CBS News by YouGov. The margin of error in both Wisconsin and Pennsylvania is +/- 3.7. 1,009 registered voters were surveyed in Wisconsin and 1,225 were surveyed in Pennsylvania.

Go deeper: The blue wave threatening to crush Trump's re-election hopes

Go deeper

Cook Political Report moves Arizona from “toss up” to “lean Democrat” in presidential race

Photos: Sean Rayford/Getty Images; Chip Somodevilla/Getty Images

The Cook Political Report on Thursday changed its forecast of Arizona in the presidential race from "toss up" to "lean Democrat," citing new polling data that shows the Sun Belt state slipping away from President Trump.

Why it matters: The rating in a crucial swing state doesn't bode well for President Trump's re-election chances. He won the state by more than 3 points in 2016.

Mike Allen, author of AM
Sep 18, 2020 - Politics & Policy

First look: Biden's tough "Knock on the Door" ad

Joe Biden, believing President Trump is suddenly vulnerable with military voters, goes up today with an ad called "Knock On The Door," featuring retired Air force Brigadier General John Douglass, a former casualty notification officer.

Mike Allen, author of AM
Sep 18, 2020 - Politics & Policy

Scoop: Mike Bloomberg's anti-chaos theory

CNN's Anderson Cooper questions Joe Biden last night at a drive-in town hall in Moosic, Pa., outside Scranton. Photo: CNN

Mike Bloomberg's $100 million Florida blitz begins today and will continue "wall to wall" in all 10 TV markets through Election Day, advisers tell me.

Why it matters: Bloomberg thinks that Joe Biden putting away Florida is the most feasible way to head off the national chaos we could have if the outcome of Trump v. Biden remained uncertain long after Election Day.