A GOP wave year following a two-term GOP Governor stint (yes, Arnold, but still) where CAGOP still had some juice in the tank? I really don't think so. By margin, Brown did better than 3 other statewide candidates (Senate, AG, LTGOV) & did worse than 3 other statewide candidates (SOS, Controller & Treasurer). He did 0.1 point worse than the median of the 8 contests (INS-COMM).
If you want to look at a
real underperformance from that cycle, then look no further than the most over-hyped political candidate since Dan Quayle/DayQuil:
CA AG 2010 Results