There are a lot more than 2 Californias easymo.
Southern California - Stretches from About Santa Barbara, South to the border and inland about 50 miles. This is "Lala land and the location of a huge percentage of our population. Also a strong Republican stronghold in most areas and a Republican majority.
Inland Empire / Desert Southwest - Follow the Eastern border of California from about Trona to the southern border, and west to the western border of San Bernardino or Riverside County. This is the great Mojave Desert, and Agricultural areas to the south in Imperial County. Very Western socially, and Politically conservative.
Central State - Lompoc to Big Sur on the West to the Sierra Nevadas on the East. Agricultural and very Conservative. This area includes most of the great Central Valley of California and where a lot of your food is grown right here. This is where I went to School, and my University was the NCAA Rodeo Champion. Huge fields of everything from cotton to rice to avocados.
North Central - Monterey to Marin County on the west, Tahoe and Sacramento on the East. This is the "Liberal California". Aside from a small pocket in and around Los Angeles, this is the Stronghold of the minority Democratic Party in California.
Northern California - Everything North of Marin and Tahoe. Might as well be Oregon. Only it's prettier.