The presidential race may be inducing whiplash, but the House battleground remains relatively stable in the final week. We rate only 40 House races in Lean or Toss Up, and Democrats would need to sweep 35 of them to win control, so Republicans remain overwhelming favorites to hold onto their majority. But there is still plenty of uncertainty about the size of that majority: Democrats could gain anywhere from 5 to 20 seats. Last week, when Hillary Clinton appeared to be inching closer to a comfortable win, we revised our outlook for Democrats upward to a gain of 10 to 20 seats. But Republican voters have begun coming home to Donald Trump amid the Comey news, and there may not be another wave of reliable House district-level polling before the election. As a result, we're stretching our outlook back to a slightly wider range of between 5 and 20 seats. Movement in races has been minimal and doesn't clearly benefit one side. Democrats are increasingly confident that they can defeat longtime incumbents like GOP Reps. Darrell Issa (CA-49), John Mica

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