In safe and many-mandered Illinois, Democratic primary elections are where the action is. And when an abiding figure like Dick Durbin announces he's giving up his US Senate seat, you can expect an eventful season. To take a close look at the flurry of ambitious hopefuls in that race, along with the ensemble-sized casts running in US House districts 2, 7, and 9, Henry sits down with Greg Bishop, Illinois editor at The Center Square. 

Stay tuned til the end for breakdowns of subtle, yet effective ads from Louisiana Senator Bill Cassidy and New Jersey 11 hopeful Brendan Gill.