Comparing the 2020 US Senate Race in States in NON Safe seats from those States in previous years.
AL(Jones-D) will either be like in 1996(Sessions-R vs Bedford-D) or if Republicans have the same problems they had in 2017(Jones-D vs Moore-R). Worse Case scenario is Jones-D loses re-election by a 7 percent margin.
AZ special(McSally-R??) will either be like in 2012(Flake-R vs Carmona-D) or 2018(McSally-R vs Sinema-D). Worse Case scenario is McSally-R wins re-election by a 3 percent margin.
CO(Gardner-R) will either be like in 2004(Salazar-D vs Coors-R) or 2014(Udall-D vs Gardner-R) if Democrats nominate a generic candidate. Worse Case scenario is Gardner-R wins re-election by a 2 percent margin. Best Case scenario is Gardner-R loses re-election by a 4 percent margin if Democrats nominate a generic candidate. If Democrats nominate a top tier candidate, CO(Gardner-R will either be like 2008(Udall-D vs Schaffer-R) or 2010(Bennet-D vs Buck-R). Worse Case scenario is Gardner-R loses re-election by a 2 percent margin. Best Case scenario is Gardner-R loses re-election by a 10 percent margin if Democrats nominate a top tier candidate.
