The California Republican Party is holding a state convention in Sacramento March 18-20. According to this news story, the party is likely to begin holding its own primary, at its own expense, beginning in 2014. The party would postally mail a ballot to all registered Republicans, in advance of the June government primary. The results would determine which Republican would be endorsed by the party, and the endorsed Republican candidates would be the beneficiary of party support at the polls in June and November.
The private primary ballot will cost a great deal to administer. However, apparently the party hopes that Republican registrants will respond to the mail ballot, not only with a vote, but with a donation to the party.