I thought Sen. Chuck Hagel (R-NE) would make a run for the White House (but lose in the primary), but I would not have been too surprised if he skipped it. What would surprise is if he doesn't run to retain his senate seat. But according to some local sources, Hagel may be doing just that--neither running for President, nor Senate re-election.
If true, this puts the Nebraska Senate seat back into play (admittedly as a second-tier opportunity).
Hagel was one of my favorite Republican's in the Senate, due to his ever-scarcer (in Washington, anyway) independent streak. It'll be interesting to see what he says or does without the specter of re-election or promotion constraining him over these next few years.
The comments at the Swingstate Project have some projections on who will run to replace Hagel, and points out that, depending on whether Rep. Lee Terry (R-NE) decides to go for the GOP nod, we may have a renewed chance to pick up the Nebraska 2nd district in 2008.