Overall, the House landscape has been remarkably stable compared to the past five election cycles, when plenty of races came "on to the board" in the final months. But based on recent developments, as well as the latest public and private polling, we are revising our ratings in eight races. These changes don't clearly favor either party: four are in Democrats' direction, and four reflect improved prospects for Republicans. Democrats would need to win a highly improbable 35 of the 37 seats we rate as competitive to win the majority, and if each party were to win half of the 18 races in our Toss Up column, Democrats would net 11 seats - less than half of the 30 seats they need. Our outlook remains a Democratic gain of between 5 and 20 seats, with a pickup of between 10 to 15 seats the likeliest outcome. See our latest House ratings here:

Updated Bottom Lines

AZ-09: Rep. Kyrsten Sinema (D) - East Phoenix: Tempe, parts of Scottsdale Solid Democratic. Sinema sits in a quintessential suburban swing district, but just

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