Back in March, Alabama, Arkansas, California, North Carolina and Texas held their congressional primaries, kicking off a mini-epoch of intra-party contests (mostly, with some exceptions), that has just now concluded with Tuesday’s primaries in New Hampshire, Rhode Island and Delaware (sort of; thanks Louisiana). So what’s it all about? What can we learn from this past six months? Learn more about your ad choices. Visit megaphone.fm/adchoices