At Buzzfeed, John Stanton posts a mailer in the Berman-Sherman race:
The mailer is evidently trying to get Republicans to vote against the liberal Berman and vote for the just-as-liberal Sherman.
The mailer lists LA City Councilman Dennis Zine under the heading of Republicans who've endorsed Sherman, but in 2011, Zine changed his registration to "decline to state"
"Californians for Integrity in Government" is a Super PAC whose expenditures go almost exclusively to this race. Its top contributors are the Southwest Regional Council of Carpenters ($225,000) and S&S Business Holdings ($100,000).