I haven't double checked this but it seems there's a lot of retiring Dems involved in this. Nothing to loose? I don't think Rockefeller is the only one though.
Senate:
•Saxby Chambliss, R-Ga., 70, 2 terms
•Tom Harkin, D-Iowa, 74, 5 terms
•Mike Johanns, R-Neb., 62, 1 term
•Tim Johnson, D-S.D., 67, 3 terms
•Carl Levin, D-Mich., 79, 6 terms
•Jay Rockefeller, D-W.Va., 76, 5 terms
•Tom Coburn, R-Okla., 65, 2 terms
Notable House:
•Michele Bachmann, R-Minn., 57, 4 terms
•John D. Dingell, D-Mich., 87,
29 terms
•George Miller, D-Calif., 68, 20 terms
•James P. Moran, D-Va., 68, 12 terms
•Henry A. Waxman, D-Calif., 74, 20 terms