Angle spokesman Jarrod Agen says the logistics of getting Angle to the United We Stand for Americans border coalition event in Hereford, Ariz., on Sunday couldn't be worked out. He says Angle will appear Saturday at a Republican picnic in Elko, Nev., and Sunday at fundraisers in Las Vegas.
Event organizer Tim Selaty Sr. calls Angle's decision to withdraw "kind of a shocker."
Angle had been listed as a headliner, along with Maricopa County Sheriff Joe Arpaio and others.
Angle, who won the Nevada GOP nomination with support from conservative groups, including the Tea Party Express, is trying to unseat Senate Democratic leader Harry Reid.