This week, almost every Republican running for president is headed to the Iowa State Fair, famous for its fried Twinkies and statues of farm animals made out of butter and — every four years — extremely embarrassing photos of candidates eating unwieldy treats. The Iowa State Fair also kicks off a new more intense period of the Republican primary season as nationally televised debates begin this month and the five month countdown to the Iowa Caucuses begins. Iowa’s importance in presidential nomination contests ebbs and flows and this year the state looms as more important than ever. The conventional wisdom among Republicans is that if Donald Trump’s opponents can’t slow him down in Iowa, then the race may be over. Joining Playbook co-author and Deep Dive host Ryan Lizza for this episode is the man responsible for administering this critical contest – the chairman of the Iowa Republican Party, Jeff Kaufmann. Kaufmann is also a history professor and in the course of this convers...