An analysis from FiveThirtyEight found that in 38 special elections held so far this year, Democrats have outperformed the partisan lean by an average of 10%
"Almost all of these elections keep ending up different than what you would have expected -- in the same direction. And so, that, to me, suggests that there's some stickiness to this"
I am really hoping this holds true. The 2016 election left me extremely skeptical of polls lol.