Iowa and New Hampshire have voted, but the Democratic field has not appreciably thinned. With no candidate even gaining 30 percent in the first two states, political forecasters have noted that the odds are greatly increasing that no one will have a majority heading into the Democratic convention in Milwaukee this summer. While discussion of a brokered convention comes up every four years, the parties have done little to plan for what one would actually look like. Thanks to changes in the process, a contested fight could be vastly more complicated than in the past.