A graduate of California State Polytechnic University, Pomona, Horcher practiced law before joining the Diamond Bar Municipal Advisory Council in 1982.
His support on many key votes endeared him to Democratic Speaker Willie Brown but made him a pariah among his fellow Republicans.
Horcher, still fuming from his own party's rough treatment of him, declared himself an Independent on December 5, 1994[4] and voted to keep Democrat Brown in power.
He was replaced by, coincidentally, Diamond Bar City Councilman, Gary Miller, who turned out to be a more loyal Republican.
[5] After leaving the Assembly, Horcher held various position in the administration of Willie Brown, who by then had been elected mayor of San Francisco.