In this New Year's Eve eve edition of the weekly roundup, the NPR Politics team looks ahead to 2016's Iowa Caucuses and New Hampshire Primary, plus a look at battle for control of the Senate in the new year. This episode: host Sam Sanders is in Iowa and campaign reporter Asma Khalid is in New Hampshire, with political editor Domenico Montanaro and digital political reporter Jessica Taylor in Washington. Find the team on Twitter @samsanders, @asmamk, @JessicaTaylor, @DomenicoNPR, and at npr.org/politics.