Now that Oslo is in the race, I think we have a (new) frontrunner, even if Munich bids. The Norwegians are much more popluar compared to the Germans and Bach can not lobby for Munich anymore.
A majority of the members of the Bavarian Parliament has said today, they will support the bid, if the referedum will be positive. Only the Greens have said, they are against a possible bid.
Well, maybe Sweden is more successful in Curling or Ice Hockey than Switzerland, but they would die for Curling and Ice Hockey. There would be not a much difference.