Sad that people think Bayh deserves to lose, but that Flawless Beautiful Marco deserves to win. Double standard much? Anyway, this race isn't quite over yet, but Democrats should definitely hope for other races like NH and NC to get a majority (and I'd much rather have Senators like Ross than Senators like Bayh.)
Easiest path to a Democratic "majority" is IL, WI, PA, and NH, and holding NV. If we want a real majority, I think IN, MO, and NC are all possibilities, but the Republicans are currently favored in all of those.