Proponents of expanding the Los Angeles County Board of Supervisors tried in 1962, in 1976, in 1992 and again in 2000. “The way we’re doing county governance right now just doesn’t work,” said Supervisor Lindsey Horvath, who co-authored the measure with Supervisor Janice Hahn. “This time, it wasn’t just about expanding the board.” Supervisor Holly Mitchell, who opposed the measure, …