COUNCIL BLUFFS, Iowa — The people of Iowa have a near-unique opportunity to see presidential candidates up close. And the people who live near Iowa like to take a look, too. Go to events in the northern part of the state, and you’ll find plenty of people from Minnesota who’ve come down for a campaign rally. Go down south, and you’ll find Missourians who have come north. They’re great for filling up a room, but on the other hand, they can’t vote in the Iowa caucuses.