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Sunday, November 15, 2026Nov 15

Feeling caucus confusion? Your guide to how Iowa works

FILE - Audience members listen to Republican presidential candidate Nikki Haley speak during a town hall, Friday, Nov. 17, 2023, in Ankeny, Iowa. Former President Donald Trump was the first choice of 51% of likely Iowa caucus participants in a Des Moines Register-NBC News-Mediacom Iowa Poll published Monday, Dec. 11. Florida Gov. Ron DeSantis, who has vowed that he will win Iowa, had the support of 19%. Former United Nations Ambassador Nikki Haley, who has suggested she can beat DeSantis in the state and go head to head with Trump in later primaries, was at 16%. (AP Photo/Charlie Neibergall, File)
FILE - Audience members listen to Republican presidential candidate Nikki Haley speak during a town hall, Friday, Nov. 17, 2023, in Ankeny, Iowa. Former President Donald Trump was the first choice of 51% of likely Iowa caucus participants in a Des Moines Register-NBC News-Mediacom Iowa Poll published Monday, Dec. 11. Florida Gov. Ron DeSantis, who has vowed that he will win Iowa, had the support of 19%. Former United Nations Ambassador Nikki Haley, who has suggested she can beat DeSantis in the state and go head to head with Trump in later primaries, was at 16%. (AP Photo/Charlie Neibergall, File)

WASHINGTON (AP) — The race for the White House officially begins in less than two weeks, and despite some prolonged jockeying over the election calendar, the long primary season will once again begin in Iowa with a caucus process that has served as the lead-off voting event since the 1970s.

While Iowa has played an outsize role in presidential politics for generations, the details of how the caucuses actually work can surprise and mystify even hard-core political junkies. The Republican process this year is largely unchanged, but there are significant changes to the traditional voting schedule on the Democratic side. Much of what you think you know about the Iowa caucuses may no longer be applicable in 2024.

Since the contested Iowa caucuses of 2016 and 2020 may seem like a long time ago, here’s an update of what they are, how they work and why they matter.

What is a caucus?

A political caucus is a gathering of people with a shared interest or goal. The Iowa caucuses are a series of local meetings held throughout the state where participants conduct party business and usually indicate their preference for a presidential nominee to represent the party on the November ballot. It’s also the first step in a months-long process to select people to serve as delegates to the national party conventions this summer.