I strongly recommend the trick you can read about in a comment, to get behind the paywall and read the whole thing. Anyway, here are a few lines from the article:
Presumptive Democratic presidential nominee Joe Biden is playing prevent defense. Biden is ahead of President Trump by six points in national polls and leads in swing states such as Wisconsin, Florida, Michigan, Pennsylvania and Arizona. He doesn’t need to recapture the news cycle, retool his strategy or reinvent the wheel to beat Trump. He just needs to stay ahead and run out the clock.
So when Biden picks his running mate, he should simply try to minimize risk. Biden should stay away from big-name progressives such as Sen. Elizabeth Warren (D-Mass.), future superstars such as Sen. Kamala D. Harris (D-Calif.) or Georgian Stacey Abrams and swing-state saviors such as Sen. Amy Klobuchar (D-Minn.), Michigan Gov. Gretchen Whitmer (D) or Sen. Tammy Baldwin (D-Wis.). Those candidates might net Biden some votes, but choosing them would also pose real risks to Biden’s campaign and to his agenda. The safest choice, and the one most able to bolster important parts of Biden’s message, is Sen. Tammy Duckworth (D-Ill.).
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Duckworth easily meets the basic requirements for the job. She served in the House for four years and has been in the Senate since 2017, giving her more congressional experience than Donald Trump or Barack Obama had when they were inaugurated. As a 52-year-old religiously unaffiliated Asian American, she would balance the ticket demographically. She’s plausible as commander in chief, an essential qualification given Biden’s age. And, like Biden, she’s neither too liberal nor too moderate — data-driven measures place her right in the middle of the Senate Democratic Caucus.
And more than that, adding Duckworth to the ticket would also fill in some of the gaps in Biden’s experience while amplifying his vision. Biden constantly touts his foreign policy experience, but he has never served in the military. Duckworth is a combat veteran who lost her legs in the Iraq War, and as vice president, she would be able to provide a soldier’s firsthand perspective on war in the Middle East. More broadly, her time in the military would underscore Biden’s emphasis on service and sacrifice, especially at a moment when Trump’s handling of the pandemic has raised questions about how he treats members of the armed services.
This isn’t the only area where Duckworth’s personal story and political experience would make her a formidable addition to the ticket. As the Biden administration tackles issues such as paid family leave, Duckworth could provide a crucial combination of legislative know-how and firsthand personal experience as a relatively new parent to make the case for the administration’s proposals.