Nate Silver @NateSilver538
Although Upshot/Siena has helped a great deal, still a number of competitive House races where there's been little… https://t.co/eVtFWBwOcr — PolitiTweet.org
FiveThirtyEight @FiveThirtyEight
Some competitive races have little to no polling. That’s a problem. https://t.co/391u5JPeiU