Joe Lieberman of Connecticut, Daniel Akaka of Hawaii and Robert Byrd of West Virginia
Richard Bryan of Nevada, Diane Feinstein of California and Charles Robb of Virginia.
Bryan: former Governor and a moderate.
Feinstein: won special election in 1992 in a landslide over the appointed Republican Senator, and would probably defeat any Republican not named Michael Huffington
Robb: won IOTL in a 3-way race (Marshall Coleman ran as an Independent with the backing of Sen. John Warner who despised Oliver North)