Eduardo Martinez, mayor of Richmond, Calif., who apologized last year for sharing antisemitic posts on LinkedIn about a deadly attack on a Chanukah celebration in Sydney, appears headed for defeat in his re-election bid, according to preliminary election results.Contra Costa County results released on June 5 show Martinez in third place with 3,950 votes (19.5%). Claudia Jimenez, a member of the Richmond City Council, leads the race with 6,915 vo…