Fiorina is carry LA county by 2%. That means that yes, Hispanics and Asians have moved heavily to the GOP if this poll is at all accurate.
I don't know what Survey USA defines as "Greater L.A", but it's not just LA County. SUSA has 4 regions - Greater LA, Bay Area/Northern Coast, Central Valley and Inland Empire. Greater LA is supposed to be about 37% of the electorate. LA County has 27% of the state's population. So other counties must be included - probably Orange, Ventura and San Diego and who knows what else how far up the coast (I'd include Santa Barbara and San Luis Obispo and put coastal counties to the north of that in San Francisco/Northern Coast). I'd assume San Bernadino and Riverside would be considered "Inland Empire" (probably with Imperial and perhaps a few other counties on the Nevada border), and the Central Valley would start at Kern.
Fiorina's lead in Greater LA is actually down from +5 points (so net -3). Her lead was also down net 5 in the Inland Empire . Where Fiorina's lead significantly increased was the Central Valley - from +7 to +21. She was also net +3 in the Bay Area/Northern Coast - but still trails Boxer significantly up North.
