I can only speculate that Daub doesn’t want to run against an incumbent Hagel - something that doesn’t scare off Bruning, which I believe speaks well for Bruning. If Hagel announces his candidacy for POTUS (which I doubt he will, as he likely might not even carry Nebraska at this point), I would further speculate that Daub jumps into a primary. I would also speculate that Mayor Mike “Fidel” Fahey runs for the dims.
That sounds pretty acurate to me.