Complex sentence: Lampson announced on August 17 2006 that three major police associations had endorsed him: the National Association of Police Officers, the International Union of Police Associations, and the Texas State Police Coalition.
Split into simpler sentences: Lampson announced on August 17 2006 that three major police associations have endorsed him. These organizations are the National Association of Police Officers, the International Union of Police Associations, and the Texas State Police Coalition.