Biden rebounds, Harris slips in new poll ahead of CNN debates; Top Republicans hesitate to embrace Trump's Intel Chief pick, a Congressional loyalist to Trump and Russia probe critic; Trump steps up attacks on Cummings and Baltimore, calling Congressman's

Harris jokes game plan is to "not mess up"; Kamala Harris draws scrutiny over new Medicare for all plan; Harris: "Will be polite" but show "differences of opinion"; Bitter Medicare for all fight likely on stage; Kamala Harris unveils health care plan ahead of debate as her mixed message on Medicare for all is criticized; Biden camp calls it the "Have-it-every-which-way approach"; Countdown to CNN's Democratic debates in Detroit; Candidate Andrew Yang reveals debate strategy; Dems united in fighting climate crisis, but divided on a plan; When your debate face says it all

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