That's a head scratcher. As is Tenenbaum.
Did you notice that in his retirement announcement, Gallegly mentioned Michael Bradbury, a longtime former Ventura County District Attorney and Gallegly ally?
It appears that Ventura County Republicans have rival fations, presumably lead by Gallegly and McClintock. In view of that, Gallegly's decision makes sense.
The next Congressman will either be Glen Becerra or Michael Bradbury.