It's getting hard to see how Biden can stay in the race

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• Biden is vowing to stay in the race — but his political position seems untenable.
• His polling is slipping. House Democrats are squirming. There's open talk of swapping in VP Harris.
• Biden could stay in, but he may be irreparably weakened by now.

As of Wednesday, President Joe Biden is vowing to stay in the presidential race. But it's becoming difficult to see how he can do so without suffering a humiliating defeat in November.

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