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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

Tech's election post mortem: Better than 2016, but lots of new woes

Illustration: Eniola Odetunde/Axios

Silicon Valley's platforms are relieved to see Election Day slip into the past and feel they did a much better job than in 2016 at deflecting foreign meddling and disinformation, even as critics continue to point out new failures and President Trump's refusal to concede has laid new challenges in their path.

Driving the news: With online polarization deepening after a close election, the CEOs of Facebook and Twitter will face hostile Senate questioning Tuesday from both sides of the aisle.

Updated 2 hours ago - World

UK government: Kremlin has plan "to install pro-Russian leadership" in Ukraine

British Foreign Secretary Elizabeth Truss. Photo: Gints Ivuskans / AFP via Getty Images

The United Kingdom's Foreign Secretary on Saturday night said the government has "information that indicates the Russian Government is looking to install a pro-Russian leader in Kyiv as it considers whether to invade and occupy Ukraine."

Driving the news: U.S. National Security Council spokeswoman Emily Horne called the intelligence "deeply concerning" in a statement to Axios. The Biden administration has said Russia is actively manufacturing a pretext for invasion and warned that Putin could use joint military exercises in Belarus as cover to invade from the north.

Updated 4 hours ago - Science

This powerful new accelerator looks for keys to the center of atoms

Illustration: Eniola Odetunde/Axios

Nuclear physicists trying to piece together how atoms are built are about to get a powerful new tool.

Why it matters: When the Facility for Rare Isotope Beams begins experiments later this spring, physicists from around the world will use the particle accelerator to better understand the inner workings of atoms that make up all the matter that can be seen in the universe.