“Democrats who worried about President Biden’s re-election prospects even before his uneven debate Thursday had been pointing to a bright spot in this year’s campaign: The party’s Senate candidates, and some vulnerable House candidates, generally poll better than the weakened president,” the Wall Street Journal reports. “Now, those Democratic candidates and their aides are trying to sort through whether Biden’s halting performance and sometimes dazed appearance have sapped the party’s goals of retaining the Senate and flipping the House.