Nate Cohn @Nate_Cohn
"Expectations" are the FiveThirtyEight fundamentals. In Wisconsin, for ex., the fundamentals are R+2, the poll average is D+4, so that's Democrats +6 v. expectations. That happens to be fairly similar to the D+8 polling error in 2020 -- a pattern in the Senate battlegrounds — PolitiTweet.org