Afternoon campaign update *

• Bob Hertzberg called on Mayor Hahn to remove airport commissioner Miguel Contreras, DWP board vice-president Sid Stolper, and commissioners Julie Butcher, Tyrone Freeman and Sergio Rascon. Each are officials of labor groups that are making independent expenditures to support Hahn's reelection. "If I were the mayor of Los Angeles," Hertzberg said, "I would immediately fire all of those campaign aides."

• Hertzberg explained at his Eagle Rock press conference that he failed to show at a Los Angeles Sentinel-KJLH debate on Saturday because of a schedule screw-up. It was on his calendar for 8 p.m. rather than 8 a.m., he said. Hahn didn't show either.

• Richard Alarcon failed to appear for a pre-arranged spot this morning on KNX radio. A listener reports that anchor Dick Helton sounded clearly annoyed and commented that Alarcon had specifically confirmed his availability.

• Antonio Villaraigosa sits for a Q-A with the San Fernando Valley Business Journal and compares Los Angeles to old Venice.

• While tonight's KCBS-2 debate won't air until tomorrow at 6:30 p.m., it can be heard live on KFWB and CBS2.com.

• Hahn's endorsements from the black community this morning included Ethel and Lorraine Bradley (the late mayor's widow and daughter), police commissioner David Cunningham Jr., some ministers including Rev. William Epps of 2nd Baptist Church, longtime activist Sweet Alice Harris, and for the Chowhound crowd, Herb Hudson of Roscoe's Chicken and Waffles.

* Updated