Would rate this at weaker Safe R, but still think it's worth it for Dems to throw money here just to see what happens - Nebraska isn't that expensive of a state and Ds have tons of money.
The backing Independents in redder states may be an interesting strategy, especially for R+10/15ish states like Iowa and Alaska.
It’s more than likely that the DCCC and the Biden campaign throws a good chunk of change into NE-02, so it wouldn’t hurt to help Osborne statewide as well. Worst case scenario, they just drive up the turnout in the 2nd without really changing the outcome of the Senate race.