CNN has its first numbers for prospective Democratic presidential candidates in Iowa, the first caucus state in 2020, and the news is not pretty for California Democrats. Sitting atop the pile in a cluttered field is former Veep Joe Biden with 32 percent, followed by laggard Bernie Sanders with 19 percent and Beto O’Rourke at 11 percent. No other Democrat gets into double digits. And Sen. Kamala Harris is the only prospective candidate from California who manages above 1 percent. Harris comes in fifth with a whopping five percent. Tom Steyer, Eric Swalwell and Eric Garcetti all manage less than 1 percent according to the poll. Why are Iowans just not that into Californians? It could be that culturally, even among progressives, Iowa is pretty different to California. Iowa is obviously a whiter state than the Golden State. It’s over 90 percent white, including about 5.6 percent of the population…