The state is an outlier in taking days to count most votes, but supporters of the system say it is designed to enfranchise more people while protecting against fraud.
While primary day in California is now over, it could take days or weeks for final vote counts to be determined and some projections to be made.
Polls will close at 8 p.m. local time, but California’s meticulous review process and heavy reliance on mail ballots mean races may not be called quickly.
Best picture is the only Oscar category decided by preferential ballot. Our reporter Marc Tracy explains how that works.
The slow counting of votes is a classic example of the perfect being the enemy of the good.