Here are some moderate as hell congresspeople for Joe to choose from.
#48 0.68 Sen. Joe Donnelly [D-IN, 2013-2018]
#49 0.68 Sen. Richard Shelby [R-AL]
#50 0.65 Sen. Robert “Rob” Portman [R-OH]
#51 0.61 Sen. Heidi Heitkamp [D-ND, 2013-2018]
#52 0.58 Sen. Lisa Murkowski [R-AK]
#217 0.64 Rep. Edward “Ed” Royce [R-CA39, 2013-2018]
#218 0.63 Rep. Thomas Massie [R-KY4]
#219 0.63 Rep. Henry Cuellar [D-TX28]
#220 0.63 Rep. Aumua Amata [R-AS0]
#221 0.63 Rep. Vern Buchanan [R-FL16]
https://www.govtrack.us/congress/members/report-cards/2018/senate/ideology