There is a path to a 60 seat supermajority in the senate.
Whe know the polls favor the Dems. So just go to the interactive map and click 2 times on the states marked in grey, lightblue, and blue
The result will be 57 clearly won seats and 6 states a tossup. Winning half of the tossup states will give the total of 60 seats.
https://www.270towin.com/2018-senate-election/