But really, this is ill-advised. It's the same thing in Alaska when they don't like the winner -they whine. People don't realize that as LatAm immigrants assimilate into the fabric and Americanize, they tend to drift conservative, so be careful what you wish for.
Also, remember, once California's electoral college is disbanded, goodbye democrats for what, 40, 50 years in the rest of the states? For this reason democrats in the other states would be against it --they'd lose their California democratic bank (monetarily, electorally and congressionally)