Well, here's my final prediction
https://www.270towin.com/2018-senate-election/Basically, I think democrats pick up NV and AZ, but republicans flip ND. I'm predicting that Donnelly and McCaskill will hold on by the skin of their teeth, but I could easily see both going the other way. I'm especially unsure about Missouri, but it seems like Air Claire may have some last minute momentum there.
Predicted Margins for competitive races-
FL: 52-48 Nelson
MO: 49-48 McCaskill
IN: 48-46 Donnelly
NJ (lol): 53-43 Menendez
MT: 50-46 Tester
TN: 52-46 Blackburn
TX: 51-46 Cruz
WV: 51-45 Manchin
AZ: 49-47 Sinema
NV: 49-45 Rosen
ND: 54-46 Cramer