2008 Iowa Republican presidential caucuses

The 2008 Iowa Republican presidential caucuses took place on January 3, 2008. The Iowa Republican caucuses are an unofficial primary, with the delegates to the state convention selected proportionally via a straw poll. The Iowa caucuses mark the traditional formal start of the delegate selection process for the 2008 United States presidential election.

Prior to the 2008 caucuses, as in previous election cycles with a competitive presidential race, an unofficial Ames Straw Poll was held, on August 11, 2007. The official one, electing delegates to the state convention, was held on January 3, 2008, the same day as the Democratic contest. In the Ames Straw Poll, Mitt Romney finished first with 32% of the vote. In the January 2008 caucuses, Mike Huckabee finished first with 34% of the vote.

Huckabee's victory in the caucus was credited to his strong performance among evangelical voters, with an exit poll finding that 80% of his voters were evangelicals. Huckabee's victory over his nearest opponent Romney, who outspent him by millions in the state, was considered significant by media outlets.

Unlike the Democratic caucus, the Republican Party does not use voting rounds or have minimum requirements for a percent of votes. The Republican version is done with a straw vote of those attending the caucus. This vote is sometimes done by a show of hands or by dividing themselves into groups according to candidate. However, officially it is done with voters receiving a blank piece of paper with no names on it, and the voter writing a name and placing it in a ballot box.

Following the straw poll, delegates are then elected from the remaining participants in the room, as most voters leave once their vote is cast. All delegates are officially considered unbound, but media outlets either apportion delegates proportionally or apportion them in terms of winner-take-all by counties. In precincts that elect only one delegate, the delegate is chosen by majority vote and the vote must be by paper ballot. The state party strongly urges that delegates reflect the results of the preference poll, but there is no obligation that they do so.

The 2007 Ames straw poll was held at Iowa State University (Ames)'s Hilton Coliseum on August 11, 2007. This was primarily a fundraising event for the state's Republican Party, and only Iowa residents who paid the $35 price for a ticket were eligible to vote. Tickets were available through the various presidential campaigns and the Iowa Republican Party's headquarters.

In general, the candidates bought large blocks of tickets and gave them out for free to whoever agreed to go and vote for that candidate. The candidates also rented buses to transport voters to Ames.

Mitt Romney finished first with 32% of the vote, followed by Mike Huckabee (18%), Sam Brownback (15%), Tom Tancredo (14%), and Ron Paul (10%). Six other candidates shared the remaining 14% of the vote.