They still did in 2018 to a meaningful extent (though the effect varied by state). I mean just look at how bad the polls were in Ohio, Indiana, etc. that year. So yes.
Though maybe there are some pollsters who have actually figured something out about how to poll these states more accurately that we can pay more attention to than others (Selzer? Atlas Intel?). I still don't personally believe that Trafalgar even conducts actual polls, so I'm not gonna include them...
They rated the gov races in IW and OH as tossups and they were really close. Whats the issue
Polls were good in upper midwestern States like Wisconsin or Michigan or Minnesota but worse in lower midwestern states like Indiana or Missouri or Ohio.
