Question about Bernie winning Iowa. Personally I'm fairly confident that Bernie will handily win the first round of the caucus. We've got an enthusiastic base and polls show us in the lead(which means that Bernie will win by an even wider margin, naturally).

It's the second round that worries me. How do we deal with the very real possibility that candidates like Klob, Pete, and even Warren fail to make the threshold in round one, but rally behind Biden in round two? I feel like we might get the Yang and Gabbard supporters, but isn't there a serious chance that Biden ends up taking Iowa just by having supporters of those who fail to meet the threshold rally behind him?