If every state's senate delegation ran against each other

[MT Treasurer]

Some of these (e.g. Tuberville and Blackburn) would ironically be bailed out by Democratic support for their opponents, which would allow them to frame the race as a R vs. D contest.

AL: Tuberville (R), but fairly close
AK: Murkowski (R)
AZ: Kelly (D)
AR: Cotton (R), but closer than many think
CA: Padilla (D)
CO: Bennet (D)
CT: Blumenthal (D)
DE: Coons (D)
FL: Rubio (R), but closer than many think
GA: Warnock (D)
HI: Schatz (D)
ID: Crapo (R)
IL: Durbin (D)
IN: Young (R)
IA: Grassley (R)
KS: Moran (R)
KY: Paul (R), but fairly close
LA: Kennedy (R), not as close as some expect (Kennedy’s the wrong opponent for Cassidy)
ME: King (I/D)
MD: Van Hollen (D)
MA: Markey (D)
MI: Peters (D)
MN: Klobuchar (D)
MS: Wicker (R)
MO: Schmitt (R), but very close
NE: Ricketts (R)
NV: Cortez Masto (D)
NH: Shaheen (D)
NJ: Booker (D)
NM: Heinrich (D)
NY: Schumer (D)
NC: Budd (R)
ND: Cramer (R) in an upset
OH: Vance (R)
OK: Lankford (R)
OR: Wyden (D)
PA: Casey (D)
RI: Whitehouse (D)
SC: Scott (R)
SD: Rounds (R)
TN: Blackburn (R)
TX: Cornyn (R)
UT: Lee (R), but very close
VT: Sanders (I/D), but closer than many think
VA: Warner (D)
WA: Murray (D)
WV: Moore Capito (R)
WI: Baldwin (D), but very close
WY: Barrasso (R), but close

MT: