2020 US Senate Election- US Senate Seats that are likely to switch parties.

Democratic to Republican
AL(Jones-D) Jones is in a similar position as Joe Donnelly(D-IN). First got elected by a narrow margin against a controversial Republican opponent, then got defeated for re-election against an unknown Republican.
Republican to Democratic
AZ special(McSally-R) McSally-R loses to Astronaut turned gun control activist Mark Kelly-D by a similar margin as the 2018 AZ US Senate Race (McSally-R vs Sinema-D)
CO(Gardner-R) Gardner-R loses to former CO Governor John Hickenlooper-D by a high single to low double digit margin.
GA special(VACANT- Isakson-R) How does Matt Lieberman-D do? Will he be like his father and Zell Miller-D?
GA regular(Perdue-R) Democratic nominees Teresa Tomlinson-D or Jon Ossoff-D will win by a narrow margin.
NC(Tillis-R) Tillis-R narrowly loses to Cal Cunningham-D.
ME(Collins-R) Too Close to Call.