dems will not be able to stop Trump re-election in 2020 but after that they will probably be able to flip Florida and one other Trump state. Stick a fork in the Repubs. they are done.
With the Dems holding the FL senate seat and flipping AZ, MS, and NV while the Republican managed only to flip IN, Mo, ND the balance remains the same in the Senate. Murkowski and Collins are still the king makers.