Watch: Ron Paul Video Attacks Rivals

Ron Paul has launched a TV ad in Washington State in advance of Saturday's Republican caucus.

The one-minute video, which is airing on FOX News, targets rivals Mitt Romney, Rick Santorum and Newt Gingrich.

The ad is called "Three of a Kind."

According to the Herald, all precincts in the 21st Legislative District will caucus at Kamiak High School in Mukilteo.

All precincts in Snohomish County that are part of the 32nd Legislative District will caucus at the in Edmonds.

For more information on the caucus, go to Washington State Republican Party’s Precinct Caucus Web site.