Democrats guide to regaining control of the US Presidency and US Senate in 2020.
Biden/Harris-D will win all of the Clinton/Kaine-D 2016 states(232) plus
MI-16(248)
PA-20(268)
WI-10(278).
If Biden-D loses WI-10/he will need to win NE-2cd and ME-2cd(270ev)
If Biden-D loses PA-20/he will need to win AZ-11(269ev) and NE-2cd or ME-2cd.
If Biden-D loses MI-16/he will need to win AZ-11(273ev).
If Biden-D loses PA-20 and WI-10/he will need to win AZ-11(259ev) and NC-15(274ev)
If Biden-D loses PA-20 and MI-16/he will need to win AZ-11(253ev),NC-15(268),ME2cd and NE2cd(270ev)
If Biden-D loses MI-16 and WI-10/he will need to win AZ-11(263ev) and NC-15(278ev).
If Biden-D loses MI-16,PA-20,and WI-10/he will need to win AZ-11(243ev),NC-15(258ev)and GA-16(274ev).
Democrats guide to regaining control of the US Senate is losing AL(Jones-D)46 and picking up
AZ special(Kelly-D)47
CO(Hickenlooper-D)48
ME(Gideon-D)49
NC(Cunningham-D)50
The 51st seat is IA(Greenfield-D),GA regular(Ossoff-D) or GA special(Warnock-D).