So the Suburbs of LA had such a large proportion of LA County even then cause Reagan winning LA County by 15 points without winning LA would mean that
The LA suburbs were also very Republican back then in a way that would be unthinkable today.
I read an article about some disaffected SoCal conservative who moved to Las Colinas (DFW suburb) and said he liked it because it felt like living in an LA suburb 50 years ago (i.e. white, conservative).
Soon we will hear about a disaffected Texas conservative.