The Huffington Post's Kevin Robillard explains why the average age of voters will matter most in determining the winner of Monday's Iowa caucuses.

New rules for counting votes at the Iowa caucuses have people worried about an unclear result Monday night. Natasha Korecki from Politico explains how the new method could allow multiple candidates to declare victory.

The biggest swing county in Iowa is small, rural Howard County. With the Iowa caucuses a week away, John McCormick from The Wall Street Journal describes the mood of voters there.