Michael Barone outlines some interesting potential consequences of California's early primary election schedule. It's always fascinating to me how much effect process has on outcome. See also: path dependence.
California doesn't vote much like the rest of the nation any more. It favored Hillary Clinton over Donald Trump by a 30 point margin, the second most Democratic result (after Hawaii) in the nation. California voted 1 to 3 percent more Democratic than the nation in 1988, 1992 and 1996. Since then it has shifted to become more Democratic than the national result: 5 percent more in 2000, 6 percent more in 2004, 8 percent more in 2008, 9 percent more in 2012 and 13 percent more in 2016. This is the first time in American history that our largest state has voted at one end of the partisan spectrum. ...So despite California Democrats' hopes that an early presidential primary date will give the state greater influence in selecting a Democratic nominee, past history suggests that that's not likely -- and that there's a risk that California, newly installed at the left extreme of the political spectrum, will tilt the process toward an unelectable left-wing nominee.
And it seems likely -- at least this is how it's worked out in the recent past -- that an early California primary will be determinative in the Republican nomination race, which may or may not be in Democrats' interests. Politicians fiddling with the presidential primary schedule should always remember that there's no way to repeal the law of unintended consequences.