
Nate Silver @NateSilver538
This excludes a few races (GA, NH) where the Senate polling was pretty good, but even so, Congressional polls are going to miss more than those for the presidency, maybe around 5-6 points low on the GOP vs. 3-4 for POTUS. — PolitiTweet.org
Bruce Mehlman @bpmehlman
Senate polls also badly under-estimated GOP support... It wasn't unique to the Presidential race/ Trump. NEW slide⦠https://t.co/8C5QJQB0u3